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How to write a superb literature review

Andy Tay is a freelance writer based in Singapore.

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Literature reviews are important resources for scientists. They provide historical context for a field while offering opinions on its future trajectory. Creating them can provide inspiration for one’s own research, as well as some practice in writing. But few scientists are trained in how to write a review — or in what constitutes an excellent one. Even picking the appropriate software to use can be an involved decision (see ‘Tools and techniques’). So Nature asked editors and working scientists with well-cited reviews for their tips.

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doi: https://doi.org/10.1038/d41586-020-03422-x

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Correction 09 December 2020 : An earlier version of the tables in this article included some incorrect details about the programs Zotero, Endnote and Manubot. These have now been corrected.

Hsing, I.-M., Xu, Y. & Zhao, W. Electroanalysis 19 , 755–768 (2007).

Article   Google Scholar  

Ledesma, H. A. et al. Nature Nanotechnol. 14 , 645–657 (2019).

Article   PubMed   Google Scholar  

Brahlek, M., Koirala, N., Bansal, N. & Oh, S. Solid State Commun. 215–216 , 54–62 (2015).

Choi, Y. & Lee, S. Y. Nature Rev. Chem . https://doi.org/10.1038/s41570-020-00221-w (2020).

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Methodological Approaches to Literature Review

• Living reference work entry
• First Online: 09 May 2023
• Cite this living reference work entry

• Dennis Thomas 2 ,
• Elida Zairina 3 &
• Johnson George 4  

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The literature review can serve various functions in the contexts of education and research. It aids in identifying knowledge gaps, informing research methodology, and developing a theoretical framework during the planning stages of a research study or project, as well as reporting of review findings in the context of the existing literature. This chapter discusses the methodological approaches to conducting a literature review and offers an overview of different types of reviews. There are various types of reviews, including narrative reviews, scoping reviews, and systematic reviews with reporting strategies such as meta-analysis and meta-synthesis. Review authors should consider the scope of the literature review when selecting a type and method. Being focused is essential for a successful review; however, this must be balanced against the relevance of the review to a broad audience.

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Akobeng AK. Principles of evidence based medicine. Arch Dis Child. 2005;90(8):837–40.

Article   CAS   PubMed   PubMed Central   Google Scholar  

Alharbi A, Stevenson M. Refining Boolean queries to identify relevant studies for systematic review updates. J Am Med Inform Assoc. 2020;27(11):1658–66.

Article   PubMed   PubMed Central   Google Scholar  

Arksey H, O’Malley L. Scoping studies: towards a methodological framework. Int J Soc Res Methodol. 2005;8(1):19–32.

Article   Google Scholar  

Aromataris E MZE. JBI manual for evidence synthesis. 2020.

Google Scholar  

Aromataris E, Pearson A. The systematic review: an overview. Am J Nurs. 2014;114(3):53–8.

Article   PubMed   Google Scholar  

Aromataris E, Riitano D. Constructing a search strategy and searching for evidence. A guide to the literature search for a systematic review. Am J Nurs. 2014;114(5):49–56.

Babineau J. Product review: covidence (systematic review software). J Canad Health Libr Assoc Canada. 2014;35(2):68–71.

Baker JD. The purpose, process, and methods of writing a literature review. AORN J. 2016;103(3):265–9.

Bastian H, Glasziou P, Chalmers I. Seventy-five trials and eleven systematic reviews a day: how will we ever keep up? PLoS Med. 2010;7(9):e1000326.

Bramer WM, Rethlefsen ML, Kleijnen J, Franco OH. Optimal database combinations for literature searches in systematic reviews: a prospective exploratory study. Syst Rev. 2017;6(1):1–12.

Brown D. A review of the PubMed PICO tool: using evidence-based practice in health education. Health Promot Pract. 2020;21(4):496–8.

Cargo M, Harris J, Pantoja T, et al. Cochrane qualitative and implementation methods group guidance series – paper 4: methods for assessing evidence on intervention implementation. J Clin Epidemiol. 2018;97:59–69.

Cook DJ, Mulrow CD, Haynes RB. Systematic reviews: synthesis of best evidence for clinical decisions. Ann Intern Med. 1997;126(5):376–80.

Article   CAS   PubMed   Google Scholar  

Counsell C. Formulating questions and locating primary studies for inclusion in systematic reviews. Ann Intern Med. 1997;127(5):380–7.

Cummings SR, Browner WS, Hulley SB. Conceiving the research question and developing the study plan. In: Cummings SR, Browner WS, Hulley SB, editors. Designing Clinical Research: An Epidemiological Approach. 4th ed. Philadelphia (PA): P Lippincott Williams & Wilkins; 2007. p. 14–22.

Eriksen MB, Frandsen TF. The impact of patient, intervention, comparison, outcome (PICO) as a search strategy tool on literature search quality: a systematic review. JMLA. 2018;106(4):420.

Ferrari R. Writing narrative style literature reviews. Medical Writing. 2015;24(4):230–5.

Flemming K, Booth A, Hannes K, Cargo M, Noyes J. Cochrane qualitative and implementation methods group guidance series – paper 6: reporting guidelines for qualitative, implementation, and process evaluation evidence syntheses. J Clin Epidemiol. 2018;97:79–85.

Grant MJ, Booth A. A typology of reviews: an analysis of 14 review types and associated methodologies. Health Inf Libr J. 2009;26(2):91–108.

Green BN, Johnson CD, Adams A. Writing narrative literature reviews for peer-reviewed journals: secrets of the trade. J Chiropr Med. 2006;5(3):101–17.

Gregory AT, Denniss AR. An introduction to writing narrative and systematic reviews; tasks, tips and traps for aspiring authors. Heart Lung Circ. 2018;27(7):893–8.

Harden A, Thomas J, Cargo M, et al. Cochrane qualitative and implementation methods group guidance series – paper 5: methods for integrating qualitative and implementation evidence within intervention effectiveness reviews. J Clin Epidemiol. 2018;97:70–8.

Harris JL, Booth A, Cargo M, et al. Cochrane qualitative and implementation methods group guidance series – paper 2: methods for question formulation, searching, and protocol development for qualitative evidence synthesis. J Clin Epidemiol. 2018;97:39–48.

Higgins J, Thomas J. In: Chandler J, Cumpston M, Li T, Page MJ, Welch VA, editors. Cochrane Handbook for Systematic Reviews of Interventions version 6.3, updated February 2022). Available from www.training.cochrane.org/handbook.: Cochrane; 2022.

International prospective register of systematic reviews (PROSPERO). Available from https://www.crd.york.ac.uk/prospero/ .

Khan KS, Kunz R, Kleijnen J, Antes G. Five steps to conducting a systematic review. J R Soc Med. 2003;96(3):118–21.

Landhuis E. Scientific literature: information overload. Nature. 2016;535(7612):457–8.

Lockwood C, Porritt K, Munn Z, Rittenmeyer L, Salmond S, Bjerrum M, Loveday H, Carrier J, Stannard D. Chapter 2: Systematic reviews of qualitative evidence. In: Aromataris E, Munn Z, editors. JBI Manual for Evidence Synthesis. JBI; 2020. Available from https://synthesismanual.jbi.global . https://doi.org/10.46658/JBIMES-20-03 .

Chapter   Google Scholar  

Lorenzetti DL, Topfer L-A, Dennett L, Clement F. Value of databases other than medline for rapid health technology assessments. Int J Technol Assess Health Care. 2014;30(2):173–8.

Moher D, Liberati A, Tetzlaff J, Altman DG, the PRISMA Group. Preferred reporting items for (SR) and meta-analyses: the PRISMA statement. Ann Intern Med. 2009;6:264–9.

Mulrow CD. Systematic reviews: rationale for systematic reviews. BMJ. 1994;309(6954):597–9.

Munn Z, Peters MDJ, Stern C, Tufanaru C, McArthur A, Aromataris E. Systematic review or scoping review? Guidance for authors when choosing between a systematic or scoping review approach. BMC Med Res Methodol. 2018;18(1):143.

Munthe-Kaas HM, Glenton C, Booth A, Noyes J, Lewin S. Systematic mapping of existing tools to appraise methodological strengths and limitations of qualitative research: first stage in the development of the CAMELOT tool. BMC Med Res Methodol. 2019;19(1):1–13.

Murphy CM. Writing an effective review article. J Med Toxicol. 2012;8(2):89–90.

NHMRC. Guidelines for guidelines: assessing risk of bias. Available at https://nhmrc.gov.au/guidelinesforguidelines/develop/assessing-risk-bias . Last published 29 August 2019. Accessed 29 Aug 2022.

Noyes J, Booth A, Cargo M, et al. Cochrane qualitative and implementation methods group guidance series – paper 1: introduction. J Clin Epidemiol. 2018b;97:35–8.

Noyes J, Booth A, Flemming K, et al. Cochrane qualitative and implementation methods group guidance series – paper 3: methods for assessing methodological limitations, data extraction and synthesis, and confidence in synthesized qualitative findings. J Clin Epidemiol. 2018a;97:49–58.

Noyes J, Booth A, Moore G, Flemming K, Tunçalp Ö, Shakibazadeh E. Synthesising quantitative and qualitative evidence to inform guidelines on complex interventions: clarifying the purposes, designs and outlining some methods. BMJ Glob Health. 2019;4(Suppl 1):e000893.

Peters MD, Godfrey CM, Khalil H, McInerney P, Parker D, Soares CB. Guidance for conducting systematic scoping reviews. Int J Evid Healthcare. 2015;13(3):141–6.

Polanin JR, Pigott TD, Espelage DL, Grotpeter JK. Best practice guidelines for abstract screening large-evidence systematic reviews and meta-analyses. Res Synth Methods. 2019;10(3):330–42.

Article   PubMed Central   Google Scholar  

Shea BJ, Grimshaw JM, Wells GA, et al. Development of AMSTAR: a measurement tool to assess the methodological quality of systematic reviews. BMC Med Res Methodol. 2007;7(1):1–7.

Shea BJ, Reeves BC, Wells G, et al. AMSTAR 2: a critical appraisal tool for systematic reviews that include randomised or non-randomised studies of healthcare interventions, or both. Brit Med J. 2017;358

Sterne JA, Hernán MA, Reeves BC, et al. ROBINS-I: a tool for assessing risk of bias in non-randomised studies of interventions. Br Med J. 2016;355

Stroup DF, Berlin JA, Morton SC, et al. Meta-analysis of observational studies in epidemiology: a proposal for reporting. JAMA. 2000;283(15):2008–12.

Tawfik GM, Dila KAS, Mohamed MYF, et al. A step by step guide for conducting a systematic review and meta-analysis with simulation data. Trop Med Health. 2019;47(1):1–9.

The Critical Appraisal Program. Critical appraisal skills program. Available at https://casp-uk.net/ . 2022. Accessed 29 Aug 2022.

The University of Melbourne. Writing a literature review in Research Techniques 2022. Available at https://students.unimelb.edu.au/academic-skills/explore-our-resources/research-techniques/reviewing-the-literature . Accessed 29 Aug 2022.

The Writing Center University of Winconsin-Madison. Learn how to write a literature review in The Writer’s Handbook – Academic Professional Writing. 2022. Available at https://writing.wisc.edu/handbook/assignments/reviewofliterature/ . Accessed 29 Aug 2022.

Thompson SG, Sharp SJ. Explaining heterogeneity in meta-analysis: a comparison of methods. Stat Med. 1999;18(20):2693–708.

Tricco AC, Lillie E, Zarin W, et al. A scoping review on the conduct and reporting of scoping reviews. BMC Med Res Methodol. 2016;16(1):15.

Tricco AC, Lillie E, Zarin W, et al. PRISMA extension for scoping reviews (PRISMA-ScR): checklist and explanation. Ann Intern Med. 2018;169(7):467–73.

Yoneoka D, Henmi M. Clinical heterogeneity in random-effect meta-analysis: between-study boundary estimate problem. Stat Med. 2019;38(21):4131–45.

Yuan Y, Hunt RH. Systematic reviews: the good, the bad, and the ugly. Am J Gastroenterol. 2009;104(5):1086–92.

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Thomas, D., Zairina, E., George, J. (2023). Methodological Approaches to Literature Review. In: Encyclopedia of Evidence in Pharmaceutical Public Health and Health Services Research in Pharmacy. Springer, Cham. https://doi.org/10.1007/978-3-030-50247-8_57-1

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• What is a Literature Review? | Guide, Template, & Examples

What is a Literature Review? | Guide, Template, & Examples

Published on 22 February 2022 by Shona McCombes . Revised on 7 June 2022.

What is a literature review? A literature review is a survey of scholarly sources on a specific topic. It provides an overview of current knowledge, allowing you to identify relevant theories, methods, and gaps in the existing research.

There are five key steps to writing a literature review:

• Search for relevant literature
• Evaluate sources
• Identify themes, debates and gaps
• Outline the structure
• Write your literature review

A good literature review doesn’t just summarise sources – it analyses, synthesises, and critically evaluates to give a clear picture of the state of knowledge on the subject.

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Table of contents

Why write a literature review, examples of literature reviews, step 1: search for relevant literature, step 2: evaluate and select sources, step 3: identify themes, debates and gaps, step 4: outline your literature review’s structure, step 5: write your literature review, frequently asked questions about literature reviews, introduction.

• Quick Run-through
• Step 1 & 2

When you write a dissertation or thesis, you will have to conduct a literature review to situate your research within existing knowledge. The literature review gives you a chance to:

• Demonstrate your familiarity with the topic and scholarly context
• Develop a theoretical framework and methodology for your research
• Position yourself in relation to other researchers and theorists
• Show how your dissertation addresses a gap or contributes to a debate

You might also have to write a literature review as a stand-alone assignment. In this case, the purpose is to evaluate the current state of research and demonstrate your knowledge of scholarly debates around a topic.

The content will look slightly different in each case, but the process of conducting a literature review follows the same steps. We’ve written a step-by-step guide that you can follow below.

Prevent plagiarism, run a free check.

Writing literature reviews can be quite challenging! A good starting point could be to look at some examples, depending on what kind of literature review you’d like to write.

• Example literature review #1: “Why Do People Migrate? A Review of the Theoretical Literature” ( Theoretical literature review about the development of economic migration theory from the 1950s to today.)
• Example literature review #2: “Literature review as a research methodology: An overview and guidelines” ( Methodological literature review about interdisciplinary knowledge acquisition and production.)
• Example literature review #3: “The Use of Technology in English Language Learning: A Literature Review” ( Thematic literature review about the effects of technology on language acquisition.)
• Example literature review #4: “Learners’ Listening Comprehension Difficulties in English Language Learning: A Literature Review” ( Chronological literature review about how the concept of listening skills has changed over time.)

You can also check out our templates with literature review examples and sample outlines at the links below.

Download Word doc Download Google doc

Before you begin searching for literature, you need a clearly defined topic .

If you are writing the literature review section of a dissertation or research paper, you will search for literature related to your research objectives and questions .

If you are writing a literature review as a stand-alone assignment, you will have to choose a focus and develop a central question to direct your search. Unlike a dissertation research question, this question has to be answerable without collecting original data. You should be able to answer it based only on a review of existing publications.

Make a list of keywords

Start by creating a list of keywords related to your research topic. Include each of the key concepts or variables you’re interested in, and list any synonyms and related terms. You can add to this list if you discover new keywords in the process of your literature search.

• Social media, Facebook, Instagram, Twitter, Snapchat, TikTok
• Body image, self-perception, self-esteem, mental health
• Generation Z, teenagers, adolescents, youth

Search for relevant sources

Use your keywords to begin searching for sources. Some databases to search for journals and articles include:

• Your university’s library catalogue
• Google Scholar
• Project Muse (humanities and social sciences)
• Medline (life sciences and biomedicine)
• EconLit (economics)
• Inspec (physics, engineering and computer science)

You can use boolean operators to help narrow down your search:

Read the abstract to find out whether an article is relevant to your question. When you find a useful book or article, you can check the bibliography to find other relevant sources.

To identify the most important publications on your topic, take note of recurring citations. If the same authors, books or articles keep appearing in your reading, make sure to seek them out.

You probably won’t be able to read absolutely everything that has been written on the topic – you’ll have to evaluate which sources are most relevant to your questions.

For each publication, ask yourself:

• What question or problem is the author addressing?
• What are the key concepts and how are they defined?
• What are the key theories, models and methods? Does the research use established frameworks or take an innovative approach?
• What are the results and conclusions of the study?
• How does the publication relate to other literature in the field? Does it confirm, add to, or challenge established knowledge?
• How does the publication contribute to your understanding of the topic? What are its key insights and arguments?
• What are the strengths and weaknesses of the research?

Make sure the sources you use are credible, and make sure you read any landmark studies and major theories in your field of research.

You can find out how many times an article has been cited on Google Scholar – a high citation count means the article has been influential in the field, and should certainly be included in your literature review.

The scope of your review will depend on your topic and discipline: in the sciences you usually only review recent literature, but in the humanities you might take a long historical perspective (for example, to trace how a concept has changed in meaning over time).

Remember that you can use our template to summarise and evaluate sources you’re thinking about using!

Take notes and cite your sources

As you read, you should also begin the writing process. Take notes that you can later incorporate into the text of your literature review.

It’s important to keep track of your sources with references to avoid plagiarism . It can be helpful to make an annotated bibliography, where you compile full reference information and write a paragraph of summary and analysis for each source. This helps you remember what you read and saves time later in the process.

You can use our free APA Reference Generator for quick, correct, consistent citations.

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To begin organising your literature review’s argument and structure, you need to understand the connections and relationships between the sources you’ve read. Based on your reading and notes, you can look for:

• Trends and patterns (in theory, method or results): do certain approaches become more or less popular over time?
• Themes: what questions or concepts recur across the literature?
• Debates, conflicts and contradictions: where do sources disagree?
• Pivotal publications: are there any influential theories or studies that changed the direction of the field?
• Gaps: what is missing from the literature? Are there weaknesses that need to be addressed?

This step will help you work out the structure of your literature review and (if applicable) show how your own research will contribute to existing knowledge.

• Most research has focused on young women.
• There is an increasing interest in the visual aspects of social media.
• But there is still a lack of robust research on highly-visual platforms like Instagram and Snapchat – this is a gap that you could address in your own research.

There are various approaches to organising the body of a literature review. You should have a rough idea of your strategy before you start writing.

Depending on the length of your literature review, you can combine several of these strategies (for example, your overall structure might be thematic, but each theme is discussed chronologically).

Chronological

The simplest approach is to trace the development of the topic over time. However, if you choose this strategy, be careful to avoid simply listing and summarising sources in order.

Try to analyse patterns, turning points and key debates that have shaped the direction of the field. Give your interpretation of how and why certain developments occurred.

If you have found some recurring central themes, you can organise your literature review into subsections that address different aspects of the topic.

For example, if you are reviewing literature about inequalities in migrant health outcomes, key themes might include healthcare policy, language barriers, cultural attitudes, legal status, and economic access.

Methodological

If you draw your sources from different disciplines or fields that use a variety of research methods , you might want to compare the results and conclusions that emerge from different approaches. For example:

• Look at what results have emerged in qualitative versus quantitative research
• Discuss how the topic has been approached by empirical versus theoretical scholarship
• Divide the literature into sociological, historical, and cultural sources

Theoretical

A literature review is often the foundation for a theoretical framework . You can use it to discuss various theories, models, and definitions of key concepts.

You might argue for the relevance of a specific theoretical approach, or combine various theoretical concepts to create a framework for your research.

Like any other academic text, your literature review should have an introduction , a main body, and a conclusion . What you include in each depends on the objective of your literature review.

The introduction should clearly establish the focus and purpose of the literature review.

If you are writing the literature review as part of your dissertation or thesis, reiterate your central problem or research question and give a brief summary of the scholarly context. You can emphasise the timeliness of the topic (“many recent studies have focused on the problem of x”) or highlight a gap in the literature (“while there has been much research on x, few researchers have taken y into consideration”).

Depending on the length of your literature review, you might want to divide the body into subsections. You can use a subheading for each theme, time period, or methodological approach.

As you write, make sure to follow these tips:

• Summarise and synthesise: give an overview of the main points of each source and combine them into a coherent whole.
• Analyse and interpret: don’t just paraphrase other researchers – add your own interpretations, discussing the significance of findings in relation to the literature as a whole.
• Critically evaluate: mention the strengths and weaknesses of your sources.
• Write in well-structured paragraphs: use transitions and topic sentences to draw connections, comparisons and contrasts.

In the conclusion, you should summarise the key findings you have taken from the literature and emphasise their significance.

If the literature review is part of your dissertation or thesis, reiterate how your research addresses gaps and contributes new knowledge, or discuss how you have drawn on existing theories and methods to build a framework for your research. This can lead directly into your methodology section.

A literature review is a survey of scholarly sources (such as books, journal articles, and theses) related to a specific topic or research question .

It is often written as part of a dissertation , thesis, research paper , or proposal .

There are several reasons to conduct a literature review at the beginning of a research project:

• To familiarise yourself with the current state of knowledge on your topic
• To ensure that you’re not just repeating what others have already done
• To identify gaps in knowledge and unresolved problems that your research can address
• To develop your theoretical framework and methodology
• To provide an overview of the key findings and debates on the topic

Writing the literature review shows your reader how your work relates to existing research and what new insights it will contribute.

The literature review usually comes near the beginning of your  dissertation . After the introduction , it grounds your research in a scholarly field and leads directly to your theoretical framework or methodology .

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What is a Literature Review? How to Write It (with Examples)

A literature review is a critical analysis and synthesis of existing research on a particular topic. It provides an overview of the current state of knowledge, identifies gaps, and highlights key findings in the literature. 1 The purpose of a literature review is to situate your own research within the context of existing scholarship, demonstrating your understanding of the topic and showing how your work contributes to the ongoing conversation in the field. Learning how to write a literature review is a critical tool for successful research. Your ability to summarize and synthesize prior research pertaining to a certain topic demonstrates your grasp on the topic of study, and assists in the learning process. 

Table of Contents

• What is the purpose of literature review? 
• a. Habitat Loss and Species Extinction: 
• b. Range Shifts and Phenological Changes: 
• c. Ocean Acidification and Coral Reefs: 
• d. Adaptive Strategies and Conservation Efforts: 

How to write a good literature review 

• Choose a Topic and Define the Research Question: 
• Decide on the Scope of Your Review: 
• Select Databases for Searches: 
• Conduct Searches and Keep Track: 
• Review the Literature: 
• Organize and Write Your Literature Review: 
• How to write a literature review faster with Paperpal? 
• Frequently asked questions 

What is a literature review?

A well-conducted literature review demonstrates the researcher’s familiarity with the existing literature, establishes the context for their own research, and contributes to scholarly conversations on the topic. One of the purposes of a literature review is also to help researchers avoid duplicating previous work and ensure that their research is informed by and builds upon the existing body of knowledge.

What is the purpose of literature review?

A literature review serves several important purposes within academic and research contexts. Here are some key objectives and functions of a literature review: 2  

1. Contextualizing the Research Problem: The literature review provides a background and context for the research problem under investigation. It helps to situate the study within the existing body of knowledge. 

2. Identifying Gaps in Knowledge: By identifying gaps, contradictions, or areas requiring further research, the researcher can shape the research question and justify the significance of the study. This is crucial for ensuring that the new research contributes something novel to the field. 

Find academic papers related to your research topic faster. Try Research on Paperpal  

3. Understanding Theoretical and Conceptual Frameworks: Literature reviews help researchers gain an understanding of the theoretical and conceptual frameworks used in previous studies. This aids in the development of a theoretical framework for the current research. 

4. Providing Methodological Insights: Another purpose of literature reviews is that it allows researchers to learn about the methodologies employed in previous studies. This can help in choosing appropriate research methods for the current study and avoiding pitfalls that others may have encountered. 

5. Establishing Credibility: A well-conducted literature review demonstrates the researcher’s familiarity with existing scholarship, establishing their credibility and expertise in the field. It also helps in building a solid foundation for the new research. 

6. Informing Hypotheses or Research Questions: The literature review guides the formulation of hypotheses or research questions by highlighting relevant findings and areas of uncertainty in existing literature. 

Literature review example

Let’s delve deeper with a literature review example: Let’s say your literature review is about the impact of climate change on biodiversity. You might format your literature review into sections such as the effects of climate change on habitat loss and species extinction, phenological changes, and marine biodiversity. Each section would then summarize and analyze relevant studies in those areas, highlighting key findings and identifying gaps in the research. The review would conclude by emphasizing the need for further research on specific aspects of the relationship between climate change and biodiversity. The following literature review template provides a glimpse into the recommended literature review structure and content, demonstrating how research findings are organized around specific themes within a broader topic. 

Literature Review on Climate Change Impacts on Biodiversity:

Climate change is a global phenomenon with far-reaching consequences, including significant impacts on biodiversity. This literature review synthesizes key findings from various studies: 

a. Habitat Loss and Species Extinction:

Climate change-induced alterations in temperature and precipitation patterns contribute to habitat loss, affecting numerous species (Thomas et al., 2004). The review discusses how these changes increase the risk of extinction, particularly for species with specific habitat requirements. 

b. Range Shifts and Phenological Changes:

Observations of range shifts and changes in the timing of biological events (phenology) are documented in response to changing climatic conditions (Parmesan & Yohe, 2003). These shifts affect ecosystems and may lead to mismatches between species and their resources. 

c. Ocean Acidification and Coral Reefs:

The review explores the impact of climate change on marine biodiversity, emphasizing ocean acidification’s threat to coral reefs (Hoegh-Guldberg et al., 2007). Changes in pH levels negatively affect coral calcification, disrupting the delicate balance of marine ecosystems. 

d. Adaptive Strategies and Conservation Efforts:

Recognizing the urgency of the situation, the literature review discusses various adaptive strategies adopted by species and conservation efforts aimed at mitigating the impacts of climate change on biodiversity (Hannah et al., 2007). It emphasizes the importance of interdisciplinary approaches for effective conservation planning. 

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Writing a literature review involves summarizing and synthesizing existing research on a particular topic. A good literature review format should include the following elements. 

Introduction: The introduction sets the stage for your literature review, providing context and introducing the main focus of your review. 

• Opening Statement: Begin with a general statement about the broader topic and its significance in the field. 
• Scope and Purpose: Clearly define the scope of your literature review. Explain the specific research question or objective you aim to address. 
• Organizational Framework: Briefly outline the structure of your literature review, indicating how you will categorize and discuss the existing research. 
• Significance of the Study: Highlight why your literature review is important and how it contributes to the understanding of the chosen topic. 
• Thesis Statement: Conclude the introduction with a concise thesis statement that outlines the main argument or perspective you will develop in the body of the literature review. 

Body: The body of the literature review is where you provide a comprehensive analysis of existing literature, grouping studies based on themes, methodologies, or other relevant criteria. 

• Organize by Theme or Concept: Group studies that share common themes, concepts, or methodologies. Discuss each theme or concept in detail, summarizing key findings and identifying gaps or areas of disagreement. 
• Critical Analysis: Evaluate the strengths and weaknesses of each study. Discuss the methodologies used, the quality of evidence, and the overall contribution of each work to the understanding of the topic. 
• Synthesis of Findings: Synthesize the information from different studies to highlight trends, patterns, or areas of consensus in the literature. 
• Identification of Gaps: Discuss any gaps or limitations in the existing research and explain how your review contributes to filling these gaps. 
• Transition between Sections: Provide smooth transitions between different themes or concepts to maintain the flow of your literature review. 

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Conclusion: The conclusion of your literature review should summarize the main findings, highlight the contributions of the review, and suggest avenues for future research. 

• Summary of Key Findings: Recap the main findings from the literature and restate how they contribute to your research question or objective. 
• Contributions to the Field: Discuss the overall contribution of your literature review to the existing knowledge in the field. 
• Implications and Applications: Explore the practical implications of the findings and suggest how they might impact future research or practice. 
• Recommendations for Future Research: Identify areas that require further investigation and propose potential directions for future research in the field. 
• Final Thoughts: Conclude with a final reflection on the importance of your literature review and its relevance to the broader academic community. 

Conducting a literature review

Conducting a literature review is an essential step in research that involves reviewing and analyzing existing literature on a specific topic. It’s important to know how to do a literature review effectively, so here are the steps to follow: 1  

Choose a Topic and Define the Research Question:

• Select a topic that is relevant to your field of study. 
• Clearly define your research question or objective. Determine what specific aspect of the topic do you want to explore? 

Decide on the Scope of Your Review:

• Determine the timeframe for your literature review. Are you focusing on recent developments, or do you want a historical overview? 
• Consider the geographical scope. Is your review global, or are you focusing on a specific region? 
• Define the inclusion and exclusion criteria. What types of sources will you include? Are there specific types of studies or publications you will exclude? 

Select Databases for Searches:

• Identify relevant databases for your field. Examples include PubMed, IEEE Xplore, Scopus, Web of Science, and Google Scholar. 
• Consider searching in library catalogs, institutional repositories, and specialized databases related to your topic. 

Conduct Searches and Keep Track:

• Develop a systematic search strategy using keywords, Boolean operators (AND, OR, NOT), and other search techniques. 
• Record and document your search strategy for transparency and replicability. 
• Keep track of the articles, including publication details, abstracts, and links. Use citation management tools like EndNote, Zotero, or Mendeley to organize your references. 

Review the Literature:

• Evaluate the relevance and quality of each source. Consider the methodology, sample size, and results of studies. 
• Organize the literature by themes or key concepts. Identify patterns, trends, and gaps in the existing research. 
• Summarize key findings and arguments from each source. Compare and contrast different perspectives. 
• Identify areas where there is a consensus in the literature and where there are conflicting opinions. 
• Provide critical analysis and synthesis of the literature. What are the strengths and weaknesses of existing research? 

Organize and Write Your Literature Review:

• Literature review outline should be based on themes, chronological order, or methodological approaches. 
• Write a clear and coherent narrative that synthesizes the information gathered. 
• Use proper citations for each source and ensure consistency in your citation style (APA, MLA, Chicago, etc.). 
• Conclude your literature review by summarizing key findings, identifying gaps, and suggesting areas for future research. 

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How to write a literature review faster with Paperpal?

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• Cite with Confidence: Paperpal makes it easy to incorporate relevant citations and references into your writing, ensuring your arguments are well-supported by credible sources. This translates to a polished, well-researched literature review. 

The literature review sample and detailed advice on writing and conducting a review will help you produce a well-structured report. But remember that a good literature review is an ongoing process, and it may be necessary to revisit and update it as your research progresses. By combining effortless research with an easy citation process, Paperpal Research streamlines the literature review process and empowers you to write faster and with more confidence. Try Paperpal Research now and see for yourself.  

Frequently asked questions

A literature review is a critical and comprehensive analysis of existing literature (published and unpublished works) on a specific topic or research question and provides a synthesis of the current state of knowledge in a particular field. A well-conducted literature review is crucial for researchers to build upon existing knowledge, avoid duplication of efforts, and contribute to the advancement of their field. It also helps researchers situate their work within a broader context and facilitates the development of a sound theoretical and conceptual framework for their studies.

Literature review is a crucial component of research writing, providing a solid background for a research paper’s investigation. The aim is to keep professionals up to date by providing an understanding of ongoing developments within a specific field, including research methods, and experimental techniques used in that field, and present that knowledge in the form of a written report. Also, the depth and breadth of the literature review emphasizes the credibility of the scholar in his or her field.  

Before writing a literature review, it’s essential to undertake several preparatory steps to ensure that your review is well-researched, organized, and focused. This includes choosing a topic of general interest to you and doing exploratory research on that topic, writing an annotated bibliography, and noting major points, especially those that relate to the position you have taken on the topic. 

Literature reviews and academic research papers are essential components of scholarly work but serve different purposes within the academic realm. 3 A literature review aims to provide a foundation for understanding the current state of research on a particular topic, identify gaps or controversies, and lay the groundwork for future research. Therefore, it draws heavily from existing academic sources, including books, journal articles, and other scholarly publications. In contrast, an academic research paper aims to present new knowledge, contribute to the academic discourse, and advance the understanding of a specific research question. Therefore, it involves a mix of existing literature (in the introduction and literature review sections) and original data or findings obtained through research methods. 

Literature reviews are essential components of academic and research papers, and various strategies can be employed to conduct them effectively. If you want to know how to write a literature review for a research paper, here are four common approaches that are often used by researchers.  Chronological Review: This strategy involves organizing the literature based on the chronological order of publication. It helps to trace the development of a topic over time, showing how ideas, theories, and research have evolved.  Thematic Review: Thematic reviews focus on identifying and analyzing themes or topics that cut across different studies. Instead of organizing the literature chronologically, it is grouped by key themes or concepts, allowing for a comprehensive exploration of various aspects of the topic.  Methodological Review: This strategy involves organizing the literature based on the research methods employed in different studies. It helps to highlight the strengths and weaknesses of various methodologies and allows the reader to evaluate the reliability and validity of the research findings.  Theoretical Review: A theoretical review examines the literature based on the theoretical frameworks used in different studies. This approach helps to identify the key theories that have been applied to the topic and assess their contributions to the understanding of the subject.  It’s important to note that these strategies are not mutually exclusive, and a literature review may combine elements of more than one approach. The choice of strategy depends on the research question, the nature of the literature available, and the goals of the review. Additionally, other strategies, such as integrative reviews or systematic reviews, may be employed depending on the specific requirements of the research.

The literature review format can vary depending on the specific publication guidelines. However, there are some common elements and structures that are often followed. Here is a general guideline for the format of a literature review:  Introduction:   Provide an overview of the topic.  Define the scope and purpose of the literature review.  State the research question or objective.  Body:   Organize the literature by themes, concepts, or chronology.  Critically analyze and evaluate each source.  Discuss the strengths and weaknesses of the studies.  Highlight any methodological limitations or biases.  Identify patterns, connections, or contradictions in the existing research.  Conclusion:   Summarize the key points discussed in the literature review.  Highlight the research gap.  Address the research question or objective stated in the introduction.  Highlight the contributions of the review and suggest directions for future research.

Both annotated bibliographies and literature reviews involve the examination of scholarly sources. While annotated bibliographies focus on individual sources with brief annotations, literature reviews provide a more in-depth, integrated, and comprehensive analysis of existing literature on a specific topic. The key differences are as follows: 

References 

• Denney, A. S., & Tewksbury, R. (2013). How to write a literature review.  Journal of criminal justice education ,  24 (2), 218-234. 
• Pan, M. L. (2016).  Preparing literature reviews: Qualitative and quantitative approaches . Taylor & Francis. 
• Cantero, C. (2019). How to write a literature review.  San José State University Writing Center . 

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• USC Libraries
• Research Guides

Organizing Your Social Sciences Research Paper

• 5. The Literature Review
• Purpose of Guide
• Design Flaws to Avoid
• Independent and Dependent Variables
• Glossary of Research Terms
• Reading Research Effectively
• Narrowing a Topic Idea
• Broadening a Topic Idea
• Extending the Timeliness of a Topic Idea
• Academic Writing Style
• Applying Critical Thinking
• Choosing a Title
• Making an Outline
• Paragraph Development
• Research Process Video Series
• Executive Summary
• The C.A.R.S. Model
• Background Information
• The Research Problem/Question
• Theoretical Framework
• Citation Tracking
• Content Alert Services
• Evaluating Sources
• Primary Sources
• Secondary Sources
• Tiertiary Sources
• Scholarly vs. Popular Publications
• Qualitative Methods
• Quantitative Methods
• Insiderness
• Using Non-Textual Elements
• Limitations of the Study
• Common Grammar Mistakes
• Writing Concisely
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• Footnotes or Endnotes?
• Further Readings
• Generative AI and Writing
• USC Libraries Tutorials and Other Guides
• Bibliography

A literature review surveys prior research published in books, scholarly articles, and any other sources relevant to a particular issue, area of research, or theory, and by so doing, provides a description, summary, and critical evaluation of these works in relation to the research problem being investigated. Literature reviews are designed to provide an overview of sources you have used in researching a particular topic and to demonstrate to your readers how your research fits within existing scholarship about the topic.

Fink, Arlene. Conducting Research Literature Reviews: From the Internet to Paper . Fourth edition. Thousand Oaks, CA: SAGE, 2014.

Importance of a Good Literature Review

A literature review may consist of simply a summary of key sources, but in the social sciences, a literature review usually has an organizational pattern and combines both summary and synthesis, often within specific conceptual categories . A summary is a recap of the important information of the source, but a synthesis is a re-organization, or a reshuffling, of that information in a way that informs how you are planning to investigate a research problem. The analytical features of a literature review might:

• Give a new interpretation of old material or combine new with old interpretations,
• Trace the intellectual progression of the field, including major debates,
• Depending on the situation, evaluate the sources and advise the reader on the most pertinent or relevant research, or
• Usually in the conclusion of a literature review, identify where gaps exist in how a problem has been researched to date.

Given this, the purpose of a literature review is to:

• Place each work in the context of its contribution to understanding the research problem being studied.
• Describe the relationship of each work to the others under consideration.
• Identify new ways to interpret prior research.
• Reveal any gaps that exist in the literature.
• Resolve conflicts amongst seemingly contradictory previous studies.
• Identify areas of prior scholarship to prevent duplication of effort.
• Point the way in fulfilling a need for additional research.
• Locate your own research within the context of existing literature [very important].

Fink, Arlene. Conducting Research Literature Reviews: From the Internet to Paper. 2nd ed. Thousand Oaks, CA: Sage, 2005; Hart, Chris. Doing a Literature Review: Releasing the Social Science Research Imagination . Thousand Oaks, CA: Sage Publications, 1998; Jesson, Jill. Doing Your Literature Review: Traditional and Systematic Techniques . Los Angeles, CA: SAGE, 2011; Knopf, Jeffrey W. "Doing a Literature Review." PS: Political Science and Politics 39 (January 2006): 127-132; Ridley, Diana. The Literature Review: A Step-by-Step Guide for Students . 2nd ed. Los Angeles, CA: SAGE, 2012.

Types of Literature Reviews

It is important to think of knowledge in a given field as consisting of three layers. First, there are the primary studies that researchers conduct and publish. Second are the reviews of those studies that summarize and offer new interpretations built from and often extending beyond the primary studies. Third, there are the perceptions, conclusions, opinion, and interpretations that are shared informally among scholars that become part of the body of epistemological traditions within the field.

In composing a literature review, it is important to note that it is often this third layer of knowledge that is cited as "true" even though it often has only a loose relationship to the primary studies and secondary literature reviews. Given this, while literature reviews are designed to provide an overview and synthesis of pertinent sources you have explored, there are a number of approaches you could adopt depending upon the type of analysis underpinning your study.

Argumentative Review This form examines literature selectively in order to support or refute an argument, deeply embedded assumption, or philosophical problem already established in the literature. The purpose is to develop a body of literature that establishes a contrarian viewpoint. Given the value-laden nature of some social science research [e.g., educational reform; immigration control], argumentative approaches to analyzing the literature can be a legitimate and important form of discourse. However, note that they can also introduce problems of bias when they are used to make summary claims of the sort found in systematic reviews [see below].

Integrative Review Considered a form of research that reviews, critiques, and synthesizes representative literature on a topic in an integrated way such that new frameworks and perspectives on the topic are generated. The body of literature includes all studies that address related or identical hypotheses or research problems. A well-done integrative review meets the same standards as primary research in regard to clarity, rigor, and replication. This is the most common form of review in the social sciences.

Historical Review Few things rest in isolation from historical precedent. Historical literature reviews focus on examining research throughout a period of time, often starting with the first time an issue, concept, theory, phenomena emerged in the literature, then tracing its evolution within the scholarship of a discipline. The purpose is to place research in a historical context to show familiarity with state-of-the-art developments and to identify the likely directions for future research.

Methodological Review A review does not always focus on what someone said [findings], but how they came about saying what they say [method of analysis]. Reviewing methods of analysis provides a framework of understanding at different levels [i.e. those of theory, substantive fields, research approaches, and data collection and analysis techniques], how researchers draw upon a wide variety of knowledge ranging from the conceptual level to practical documents for use in fieldwork in the areas of ontological and epistemological consideration, quantitative and qualitative integration, sampling, interviewing, data collection, and data analysis. This approach helps highlight ethical issues which you should be aware of and consider as you go through your own study.

Systematic Review This form consists of an overview of existing evidence pertinent to a clearly formulated research question, which uses pre-specified and standardized methods to identify and critically appraise relevant research, and to collect, report, and analyze data from the studies that are included in the review. The goal is to deliberately document, critically evaluate, and summarize scientifically all of the research about a clearly defined research problem . Typically it focuses on a very specific empirical question, often posed in a cause-and-effect form, such as "To what extent does A contribute to B?" This type of literature review is primarily applied to examining prior research studies in clinical medicine and allied health fields, but it is increasingly being used in the social sciences.

Theoretical Review The purpose of this form is to examine the corpus of theory that has accumulated in regard to an issue, concept, theory, phenomena. The theoretical literature review helps to establish what theories already exist, the relationships between them, to what degree the existing theories have been investigated, and to develop new hypotheses to be tested. Often this form is used to help establish a lack of appropriate theories or reveal that current theories are inadequate for explaining new or emerging research problems. The unit of analysis can focus on a theoretical concept or a whole theory or framework.

NOTE: Most often the literature review will incorporate some combination of types. For example, a review that examines literature supporting or refuting an argument, assumption, or philosophical problem related to the research problem will also need to include writing supported by sources that establish the history of these arguments in the literature.

Baumeister, Roy F. and Mark R. Leary. "Writing Narrative Literature Reviews."  Review of General Psychology 1 (September 1997): 311-320; Mark R. Fink, Arlene. Conducting Research Literature Reviews: From the Internet to Paper . 2nd ed. Thousand Oaks, CA: Sage, 2005; Hart, Chris. Doing a Literature Review: Releasing the Social Science Research Imagination . Thousand Oaks, CA: Sage Publications, 1998; Kennedy, Mary M. "Defining a Literature." Educational Researcher 36 (April 2007): 139-147; Petticrew, Mark and Helen Roberts. Systematic Reviews in the Social Sciences: A Practical Guide . Malden, MA: Blackwell Publishers, 2006; Torracro, Richard. "Writing Integrative Literature Reviews: Guidelines and Examples." Human Resource Development Review 4 (September 2005): 356-367; Rocco, Tonette S. and Maria S. Plakhotnik. "Literature Reviews, Conceptual Frameworks, and Theoretical Frameworks: Terms, Functions, and Distinctions." Human Ressource Development Review 8 (March 2008): 120-130; Sutton, Anthea. Systematic Approaches to a Successful Literature Review . Los Angeles, CA: Sage Publications, 2016.

Structure and Writing Style

I.  Thinking About Your Literature Review

The structure of a literature review should include the following in support of understanding the research problem :

• An overview of the subject, issue, or theory under consideration, along with the objectives of the literature review,
• Division of works under review into themes or categories [e.g. works that support a particular position, those against, and those offering alternative approaches entirely],
• An explanation of how each work is similar to and how it varies from the others,
• Conclusions as to which pieces are best considered in their argument, are most convincing of their opinions, and make the greatest contribution to the understanding and development of their area of research.

The critical evaluation of each work should consider :

• Provenance -- what are the author's credentials? Are the author's arguments supported by evidence [e.g. primary historical material, case studies, narratives, statistics, recent scientific findings]?
• Methodology -- were the techniques used to identify, gather, and analyze the data appropriate to addressing the research problem? Was the sample size appropriate? Were the results effectively interpreted and reported?
• Objectivity -- is the author's perspective even-handed or prejudicial? Is contrary data considered or is certain pertinent information ignored to prove the author's point?
• Persuasiveness -- which of the author's theses are most convincing or least convincing?
• Validity -- are the author's arguments and conclusions convincing? Does the work ultimately contribute in any significant way to an understanding of the subject?

II.  Development of the Literature Review

Four Basic Stages of Writing 1.  Problem formulation -- which topic or field is being examined and what are its component issues? 2.  Literature search -- finding materials relevant to the subject being explored. 3.  Data evaluation -- determining which literature makes a significant contribution to the understanding of the topic. 4.  Analysis and interpretation -- discussing the findings and conclusions of pertinent literature.

Consider the following issues before writing the literature review: Clarify If your assignment is not specific about what form your literature review should take, seek clarification from your professor by asking these questions: 1.  Roughly how many sources would be appropriate to include? 2.  What types of sources should I review (books, journal articles, websites; scholarly versus popular sources)? 3.  Should I summarize, synthesize, or critique sources by discussing a common theme or issue? 4.  Should I evaluate the sources in any way beyond evaluating how they relate to understanding the research problem? 5.  Should I provide subheadings and other background information, such as definitions and/or a history? Find Models Use the exercise of reviewing the literature to examine how authors in your discipline or area of interest have composed their literature review sections. Read them to get a sense of the types of themes you might want to look for in your own research or to identify ways to organize your final review. The bibliography or reference section of sources you've already read, such as required readings in the course syllabus, are also excellent entry points into your own research. Narrow the Topic The narrower your topic, the easier it will be to limit the number of sources you need to read in order to obtain a good survey of relevant resources. Your professor will probably not expect you to read everything that's available about the topic, but you'll make the act of reviewing easier if you first limit scope of the research problem. A good strategy is to begin by searching the USC Libraries Catalog for recent books about the topic and review the table of contents for chapters that focuses on specific issues. You can also review the indexes of books to find references to specific issues that can serve as the focus of your research. For example, a book surveying the history of the Israeli-Palestinian conflict may include a chapter on the role Egypt has played in mediating the conflict, or look in the index for the pages where Egypt is mentioned in the text. Consider Whether Your Sources are Current Some disciplines require that you use information that is as current as possible. This is particularly true in disciplines in medicine and the sciences where research conducted becomes obsolete very quickly as new discoveries are made. However, when writing a review in the social sciences, a survey of the history of the literature may be required. In other words, a complete understanding the research problem requires you to deliberately examine how knowledge and perspectives have changed over time. Sort through other current bibliographies or literature reviews in the field to get a sense of what your discipline expects. You can also use this method to explore what is considered by scholars to be a "hot topic" and what is not.

III.  Ways to Organize Your Literature Review

Chronology of Events If your review follows the chronological method, you could write about the materials according to when they were published. This approach should only be followed if a clear path of research building on previous research can be identified and that these trends follow a clear chronological order of development. For example, a literature review that focuses on continuing research about the emergence of German economic power after the fall of the Soviet Union. By Publication Order your sources by publication chronology, then, only if the order demonstrates a more important trend. For instance, you could order a review of literature on environmental studies of brown fields if the progression revealed, for example, a change in the soil collection practices of the researchers who wrote and/or conducted the studies. Thematic [“conceptual categories”] A thematic literature review is the most common approach to summarizing prior research in the social and behavioral sciences. Thematic reviews are organized around a topic or issue, rather than the progression of time, although the progression of time may still be incorporated into a thematic review. For example, a review of the Internet’s impact on American presidential politics could focus on the development of online political satire. While the study focuses on one topic, the Internet’s impact on American presidential politics, it would still be organized chronologically reflecting technological developments in media. The difference in this example between a "chronological" and a "thematic" approach is what is emphasized the most: themes related to the role of the Internet in presidential politics. Note that more authentic thematic reviews tend to break away from chronological order. A review organized in this manner would shift between time periods within each section according to the point being made. Methodological A methodological approach focuses on the methods utilized by the researcher. For the Internet in American presidential politics project, one methodological approach would be to look at cultural differences between the portrayal of American presidents on American, British, and French websites. Or the review might focus on the fundraising impact of the Internet on a particular political party. A methodological scope will influence either the types of documents in the review or the way in which these documents are discussed.

Other Sections of Your Literature Review Once you've decided on the organizational method for your literature review, the sections you need to include in the paper should be easy to figure out because they arise from your organizational strategy. In other words, a chronological review would have subsections for each vital time period; a thematic review would have subtopics based upon factors that relate to the theme or issue. However, sometimes you may need to add additional sections that are necessary for your study, but do not fit in the organizational strategy of the body. What other sections you include in the body is up to you. However, only include what is necessary for the reader to locate your study within the larger scholarship about the research problem.

Here are examples of other sections, usually in the form of a single paragraph, you may need to include depending on the type of review you write:

• Current Situation : Information necessary to understand the current topic or focus of the literature review.
• Sources Used : Describes the methods and resources [e.g., databases] you used to identify the literature you reviewed.
• History : The chronological progression of the field, the research literature, or an idea that is necessary to understand the literature review, if the body of the literature review is not already a chronology.
• Selection Methods : Criteria you used to select (and perhaps exclude) sources in your literature review. For instance, you might explain that your review includes only peer-reviewed [i.e., scholarly] sources.
• Standards : Description of the way in which you present your information.
• Questions for Further Research : What questions about the field has the review sparked? How will you further your research as a result of the review?

IV.  Writing Your Literature Review

Once you've settled on how to organize your literature review, you're ready to write each section. When writing your review, keep in mind these issues.

Use Evidence A literature review section is, in this sense, just like any other academic research paper. Your interpretation of the available sources must be backed up with evidence [citations] that demonstrates that what you are saying is valid. Be Selective Select only the most important points in each source to highlight in the review. The type of information you choose to mention should relate directly to the research problem, whether it is thematic, methodological, or chronological. Related items that provide additional information, but that are not key to understanding the research problem, can be included in a list of further readings . Use Quotes Sparingly Some short quotes are appropriate if you want to emphasize a point, or if what an author stated cannot be easily paraphrased. Sometimes you may need to quote certain terminology that was coined by the author, is not common knowledge, or taken directly from the study. Do not use extensive quotes as a substitute for using your own words in reviewing the literature. Summarize and Synthesize Remember to summarize and synthesize your sources within each thematic paragraph as well as throughout the review. Recapitulate important features of a research study, but then synthesize it by rephrasing the study's significance and relating it to your own work and the work of others. Keep Your Own Voice While the literature review presents others' ideas, your voice [the writer's] should remain front and center. For example, weave references to other sources into what you are writing but maintain your own voice by starting and ending the paragraph with your own ideas and wording. Use Caution When Paraphrasing When paraphrasing a source that is not your own, be sure to represent the author's information or opinions accurately and in your own words. Even when paraphrasing an author’s work, you still must provide a citation to that work.

V.  Common Mistakes to Avoid

These are the most common mistakes made in reviewing social science research literature.

• Sources in your literature review do not clearly relate to the research problem;
• You do not take sufficient time to define and identify the most relevant sources to use in the literature review related to the research problem;
• Relies exclusively on secondary analytical sources rather than including relevant primary research studies or data;
• Uncritically accepts another researcher's findings and interpretations as valid, rather than examining critically all aspects of the research design and analysis;
• Does not describe the search procedures that were used in identifying the literature to review;
• Reports isolated statistical results rather than synthesizing them in chi-squared or meta-analytic methods; and,
• Only includes research that validates assumptions and does not consider contrary findings and alternative interpretations found in the literature.

Cook, Kathleen E. and Elise Murowchick. “Do Literature Review Skills Transfer from One Course to Another?” Psychology Learning and Teaching 13 (March 2014): 3-11; Fink, Arlene. Conducting Research Literature Reviews: From the Internet to Paper . 2nd ed. Thousand Oaks, CA: Sage, 2005; Hart, Chris. Doing a Literature Review: Releasing the Social Science Research Imagination . Thousand Oaks, CA: Sage Publications, 1998; Jesson, Jill. Doing Your Literature Review: Traditional and Systematic Techniques . London: SAGE, 2011; Literature Review Handout. Online Writing Center. Liberty University; Literature Reviews. The Writing Center. University of North Carolina; Onwuegbuzie, Anthony J. and Rebecca Frels. Seven Steps to a Comprehensive Literature Review: A Multimodal and Cultural Approach . Los Angeles, CA: SAGE, 2016; Ridley, Diana. The Literature Review: A Step-by-Step Guide for Students . 2nd ed. Los Angeles, CA: SAGE, 2012; Randolph, Justus J. “A Guide to Writing the Dissertation Literature Review." Practical Assessment, Research, and Evaluation. vol. 14, June 2009; Sutton, Anthea. Systematic Approaches to a Successful Literature Review . Los Angeles, CA: Sage Publications, 2016; Taylor, Dena. The Literature Review: A Few Tips On Conducting It. University College Writing Centre. University of Toronto; Writing a Literature Review. Academic Skills Centre. University of Canberra.

Writing Tip

Break Out of Your Disciplinary Box!

Thinking interdisciplinarily about a research problem can be a rewarding exercise in applying new ideas, theories, or concepts to an old problem. For example, what might cultural anthropologists say about the continuing conflict in the Middle East? In what ways might geographers view the need for better distribution of social service agencies in large cities than how social workers might study the issue? You don’t want to substitute a thorough review of core research literature in your discipline for studies conducted in other fields of study. However, particularly in the social sciences, thinking about research problems from multiple vectors is a key strategy for finding new solutions to a problem or gaining a new perspective. Consult with a librarian about identifying research databases in other disciplines; almost every field of study has at least one comprehensive database devoted to indexing its research literature.

Frodeman, Robert. The Oxford Handbook of Interdisciplinarity . New York: Oxford University Press, 2010.

Another Writing Tip

Don't Just Review for Content!

While conducting a review of the literature, maximize the time you devote to writing this part of your paper by thinking broadly about what you should be looking for and evaluating. Review not just what scholars are saying, but how are they saying it. Some questions to ask:

• How are they organizing their ideas?
• What methods have they used to study the problem?
• What theories have been used to explain, predict, or understand their research problem?
• What sources have they cited to support their conclusions?
• How have they used non-textual elements [e.g., charts, graphs, figures, etc.] to illustrate key points?

When you begin to write your literature review section, you'll be glad you dug deeper into how the research was designed and constructed because it establishes a means for developing more substantial analysis and interpretation of the research problem.

Hart, Chris. Doing a Literature Review: Releasing the Social Science Research Imagination . Thousand Oaks, CA: Sage Publications, 1 998.

Yet Another Writing Tip

When Do I Know I Can Stop Looking and Move On?

Here are several strategies you can utilize to assess whether you've thoroughly reviewed the literature:

• Look for repeating patterns in the research findings . If the same thing is being said, just by different people, then this likely demonstrates that the research problem has hit a conceptual dead end. At this point consider: Does your study extend current research?  Does it forge a new path? Or, does is merely add more of the same thing being said?
• Look at sources the authors cite to in their work . If you begin to see the same researchers cited again and again, then this is often an indication that no new ideas have been generated to address the research problem.
• Search Google Scholar to identify who has subsequently cited leading scholars already identified in your literature review [see next sub-tab]. This is called citation tracking and there are a number of sources that can help you identify who has cited whom, particularly scholars from outside of your discipline. Here again, if the same authors are being cited again and again, this may indicate no new literature has been written on the topic.

Onwuegbuzie, Anthony J. and Rebecca Frels. Seven Steps to a Comprehensive Literature Review: A Multimodal and Cultural Approach . Los Angeles, CA: Sage, 2016; Sutton, Anthea. Systematic Approaches to a Successful Literature Review . Los Angeles, CA: Sage Publications, 2016.

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As a grad/professional student, you will write (or already have written!) a LOT of papers. Rather than tossing that paper aside after you've received your grade, consider turning it into a manuscript submission. There are many benefits for publishing as a grad student:

• You've already done a lot of the work! You may just need to update your research a bit, and re-format your paper for the journal you're submitting to (more on that below).
• It's a great CV booster. Whether you're looking for a job, applying to another graduate program, or just looking for an internship, having a published or accepted publication on your resume looks great.
• Publishing is also a great way to grow your professional network. While the peer review process means you most likely won't know the identify of your reviewers, journal editors are often available to discuss why your article might be a good fit for their journal. Not only are they providing valuable feedback on your writing, you now have a new professional contact!

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More resources:

• Ulrichsweb This link opens in a new window ISSN, publisher, language, subject, abstracting & indexing coverage, full-text database coverage, tables of contents, and reviews written by librarians on periodicals of all types: academic and scholarly journals, e-journals, peer-reviewed titles, popular magazines, newspapers, newsletters, etc. more... less... User Limit: 5.

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A  journal's  Impact Factor  ind icates the average number of times articles from the publication have been cited over a two-year period.  The higher the journal's impact factor, the more prominent the journal is in the canon of literature.

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• Altmetrics Altmetrics considers how scholarship-based activities such as blog posts, tweets, downloads, shares, and views may provide important information about the significance of a research article or other research "product." Find more information on this research guide.

Author guidelines of most journals can be found on the journal website, which can be found via Google or by using Ulrich's.

Make sure to follow the guidelines closely and prepare your submission in accordance with these guidelines. Things like word count, format of the manuscript (text, illustrations, etc), and citation style are all very important.

Make sure to also check if the journal accepts submissions on a rolling basis, or if you need to inquire with the editor first.

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Lau F, Kuziemsky C, editors. Handbook of eHealth Evaluation: An Evidence-based Approach [Internet]. Victoria (BC): University of Victoria; 2017 Feb 27.

Handbook of eHealth Evaluation: An Evidence-based Approach [Internet].

Chapter 9 methods for literature reviews.

Guy Paré and Spyros Kitsiou .

9.1. Introduction

Literature reviews play a critical role in scholarship because science remains, first and foremost, a cumulative endeavour ( vom Brocke et al., 2009 ). As in any academic discipline, rigorous knowledge syntheses are becoming indispensable in keeping up with an exponentially growing eHealth literature, assisting practitioners, academics, and graduate students in finding, evaluating, and synthesizing the contents of many empirical and conceptual papers. Among other methods, literature reviews are essential for: (a) identifying what has been written on a subject or topic; (b) determining the extent to which a specific research area reveals any interpretable trends or patterns; (c) aggregating empirical findings related to a narrow research question to support evidence-based practice; (d) generating new frameworks and theories; and (e) identifying topics or questions requiring more investigation ( Paré, Trudel, Jaana, & Kitsiou, 2015 ).

Literature reviews can take two major forms. The most prevalent one is the “literature review” or “background” section within a journal paper or a chapter in a graduate thesis. This section synthesizes the extant literature and usually identifies the gaps in knowledge that the empirical study addresses ( Sylvester, Tate, & Johnstone, 2013 ). It may also provide a theoretical foundation for the proposed study, substantiate the presence of the research problem, justify the research as one that contributes something new to the cumulated knowledge, or validate the methods and approaches for the proposed study ( Hart, 1998 ; Levy & Ellis, 2006 ).

The second form of literature review, which is the focus of this chapter, constitutes an original and valuable work of research in and of itself ( Paré et al., 2015 ). Rather than providing a base for a researcher’s own work, it creates a solid starting point for all members of the community interested in a particular area or topic ( Mulrow, 1987 ). The so-called “review article” is a journal-length paper which has an overarching purpose to synthesize the literature in a field, without collecting or analyzing any primary data ( Green, Johnson, & Adams, 2006 ).

When appropriately conducted, review articles represent powerful information sources for practitioners looking for state-of-the art evidence to guide their decision-making and work practices ( Paré et al., 2015 ). Further, high-quality reviews become frequently cited pieces of work which researchers seek out as a first clear outline of the literature when undertaking empirical studies ( Cooper, 1988 ; Rowe, 2014 ). Scholars who track and gauge the impact of articles have found that review papers are cited and downloaded more often than any other type of published article ( Cronin, Ryan, & Coughlan, 2008 ; Montori, Wilczynski, Morgan, Haynes, & Hedges, 2003 ; Patsopoulos, Analatos, & Ioannidis, 2005 ). The reason for their popularity may be the fact that reading the review enables one to have an overview, if not a detailed knowledge of the area in question, as well as references to the most useful primary sources ( Cronin et al., 2008 ). Although they are not easy to conduct, the commitment to complete a review article provides a tremendous service to one’s academic community ( Paré et al., 2015 ; Petticrew & Roberts, 2006 ). Most, if not all, peer-reviewed journals in the fields of medical informatics publish review articles of some type.

The main objectives of this chapter are fourfold: (a) to provide an overview of the major steps and activities involved in conducting a stand-alone literature review; (b) to describe and contrast the different types of review articles that can contribute to the eHealth knowledge base; (c) to illustrate each review type with one or two examples from the eHealth literature; and (d) to provide a series of recommendations for prospective authors of review articles in this domain.

9.2. Overview of the Literature Review Process and Steps

As explained in Templier and Paré (2015) , there are six generic steps involved in conducting a review article:

• formulating the research question(s) and objective(s),
• searching the extant literature,
• screening for inclusion,
• assessing the quality of primary studies,
• extracting data, and
• analyzing data.

Although these steps are presented here in sequential order, one must keep in mind that the review process can be iterative and that many activities can be initiated during the planning stage and later refined during subsequent phases ( Finfgeld-Connett & Johnson, 2013 ; Kitchenham & Charters, 2007 ).

Formulating the research question(s) and objective(s): As a first step, members of the review team must appropriately justify the need for the review itself ( Petticrew & Roberts, 2006 ), identify the review’s main objective(s) ( Okoli & Schabram, 2010 ), and define the concepts or variables at the heart of their synthesis ( Cooper & Hedges, 2009 ; Webster & Watson, 2002 ). Importantly, they also need to articulate the research question(s) they propose to investigate ( Kitchenham & Charters, 2007 ). In this regard, we concur with Jesson, Matheson, and Lacey (2011) that clearly articulated research questions are key ingredients that guide the entire review methodology; they underscore the type of information that is needed, inform the search for and selection of relevant literature, and guide or orient the subsequent analysis. Searching the extant literature: The next step consists of searching the literature and making decisions about the suitability of material to be considered in the review ( Cooper, 1988 ). There exist three main coverage strategies. First, exhaustive coverage means an effort is made to be as comprehensive as possible in order to ensure that all relevant studies, published and unpublished, are included in the review and, thus, conclusions are based on this all-inclusive knowledge base. The second type of coverage consists of presenting materials that are representative of most other works in a given field or area. Often authors who adopt this strategy will search for relevant articles in a small number of top-tier journals in a field ( Paré et al., 2015 ). In the third strategy, the review team concentrates on prior works that have been central or pivotal to a particular topic. This may include empirical studies or conceptual papers that initiated a line of investigation, changed how problems or questions were framed, introduced new methods or concepts, or engendered important debate ( Cooper, 1988 ). Screening for inclusion: The following step consists of evaluating the applicability of the material identified in the preceding step ( Levy & Ellis, 2006 ; vom Brocke et al., 2009 ). Once a group of potential studies has been identified, members of the review team must screen them to determine their relevance ( Petticrew & Roberts, 2006 ). A set of predetermined rules provides a basis for including or excluding certain studies. This exercise requires a significant investment on the part of researchers, who must ensure enhanced objectivity and avoid biases or mistakes. As discussed later in this chapter, for certain types of reviews there must be at least two independent reviewers involved in the screening process and a procedure to resolve disagreements must also be in place ( Liberati et al., 2009 ; Shea et al., 2009 ). Assessing the quality of primary studies: In addition to screening material for inclusion, members of the review team may need to assess the scientific quality of the selected studies, that is, appraise the rigour of the research design and methods. Such formal assessment, which is usually conducted independently by at least two coders, helps members of the review team refine which studies to include in the final sample, determine whether or not the differences in quality may affect their conclusions, or guide how they analyze the data and interpret the findings ( Petticrew & Roberts, 2006 ). Ascribing quality scores to each primary study or considering through domain-based evaluations which study components have or have not been designed and executed appropriately makes it possible to reflect on the extent to which the selected study addresses possible biases and maximizes validity ( Shea et al., 2009 ). Extracting data: The following step involves gathering or extracting applicable information from each primary study included in the sample and deciding what is relevant to the problem of interest ( Cooper & Hedges, 2009 ). Indeed, the type of data that should be recorded mainly depends on the initial research questions ( Okoli & Schabram, 2010 ). However, important information may also be gathered about how, when, where and by whom the primary study was conducted, the research design and methods, or qualitative/quantitative results ( Cooper & Hedges, 2009 ). Analyzing and synthesizing data : As a final step, members of the review team must collate, summarize, aggregate, organize, and compare the evidence extracted from the included studies. The extracted data must be presented in a meaningful way that suggests a new contribution to the extant literature ( Jesson et al., 2011 ). Webster and Watson (2002) warn researchers that literature reviews should be much more than lists of papers and should provide a coherent lens to make sense of extant knowledge on a given topic. There exist several methods and techniques for synthesizing quantitative (e.g., frequency analysis, meta-analysis) and qualitative (e.g., grounded theory, narrative analysis, meta-ethnography) evidence ( Dixon-Woods, Agarwal, Jones, Young, & Sutton, 2005 ; Thomas & Harden, 2008 ).

9.3. Types of Review Articles and Brief Illustrations

EHealth researchers have at their disposal a number of approaches and methods for making sense out of existing literature, all with the purpose of casting current research findings into historical contexts or explaining contradictions that might exist among a set of primary research studies conducted on a particular topic. Our classification scheme is largely inspired from Paré and colleagues’ (2015) typology. Below we present and illustrate those review types that we feel are central to the growth and development of the eHealth domain.

9.3.1. Narrative Reviews

The narrative review is the “traditional” way of reviewing the extant literature and is skewed towards a qualitative interpretation of prior knowledge ( Sylvester et al., 2013 ). Put simply, a narrative review attempts to summarize or synthesize what has been written on a particular topic but does not seek generalization or cumulative knowledge from what is reviewed ( Davies, 2000 ; Green et al., 2006 ). Instead, the review team often undertakes the task of accumulating and synthesizing the literature to demonstrate the value of a particular point of view ( Baumeister & Leary, 1997 ). As such, reviewers may selectively ignore or limit the attention paid to certain studies in order to make a point. In this rather unsystematic approach, the selection of information from primary articles is subjective, lacks explicit criteria for inclusion and can lead to biased interpretations or inferences ( Green et al., 2006 ). There are several narrative reviews in the particular eHealth domain, as in all fields, which follow such an unstructured approach ( Silva et al., 2015 ; Paul et al., 2015 ).

Despite these criticisms, this type of review can be very useful in gathering together a volume of literature in a specific subject area and synthesizing it. As mentioned above, its primary purpose is to provide the reader with a comprehensive background for understanding current knowledge and highlighting the significance of new research ( Cronin et al., 2008 ). Faculty like to use narrative reviews in the classroom because they are often more up to date than textbooks, provide a single source for students to reference, and expose students to peer-reviewed literature ( Green et al., 2006 ). For researchers, narrative reviews can inspire research ideas by identifying gaps or inconsistencies in a body of knowledge, thus helping researchers to determine research questions or formulate hypotheses. Importantly, narrative reviews can also be used as educational articles to bring practitioners up to date with certain topics of issues ( Green et al., 2006 ).

Recently, there have been several efforts to introduce more rigour in narrative reviews that will elucidate common pitfalls and bring changes into their publication standards. Information systems researchers, among others, have contributed to advancing knowledge on how to structure a “traditional” review. For instance, Levy and Ellis (2006) proposed a generic framework for conducting such reviews. Their model follows the systematic data processing approach comprised of three steps, namely: (a) literature search and screening; (b) data extraction and analysis; and (c) writing the literature review. They provide detailed and very helpful instructions on how to conduct each step of the review process. As another methodological contribution, vom Brocke et al. (2009) offered a series of guidelines for conducting literature reviews, with a particular focus on how to search and extract the relevant body of knowledge. Last, Bandara, Miskon, and Fielt (2011) proposed a structured, predefined and tool-supported method to identify primary studies within a feasible scope, extract relevant content from identified articles, synthesize and analyze the findings, and effectively write and present the results of the literature review. We highly recommend that prospective authors of narrative reviews consult these useful sources before embarking on their work.

Darlow and Wen (2015) provide a good example of a highly structured narrative review in the eHealth field. These authors synthesized published articles that describe the development process of mobile health ( m-health ) interventions for patients’ cancer care self-management. As in most narrative reviews, the scope of the research questions being investigated is broad: (a) how development of these systems are carried out; (b) which methods are used to investigate these systems; and (c) what conclusions can be drawn as a result of the development of these systems. To provide clear answers to these questions, a literature search was conducted on six electronic databases and Google Scholar . The search was performed using several terms and free text words, combining them in an appropriate manner. Four inclusion and three exclusion criteria were utilized during the screening process. Both authors independently reviewed each of the identified articles to determine eligibility and extract study information. A flow diagram shows the number of studies identified, screened, and included or excluded at each stage of study selection. In terms of contributions, this review provides a series of practical recommendations for m-health intervention development.

9.3.2. Descriptive or Mapping Reviews

The primary goal of a descriptive review is to determine the extent to which a body of knowledge in a particular research topic reveals any interpretable pattern or trend with respect to pre-existing propositions, theories, methodologies or findings ( King & He, 2005 ; Paré et al., 2015 ). In contrast with narrative reviews, descriptive reviews follow a systematic and transparent procedure, including searching, screening and classifying studies ( Petersen, Vakkalanka, & Kuzniarz, 2015 ). Indeed, structured search methods are used to form a representative sample of a larger group of published works ( Paré et al., 2015 ). Further, authors of descriptive reviews extract from each study certain characteristics of interest, such as publication year, research methods, data collection techniques, and direction or strength of research outcomes (e.g., positive, negative, or non-significant) in the form of frequency analysis to produce quantitative results ( Sylvester et al., 2013 ). In essence, each study included in a descriptive review is treated as the unit of analysis and the published literature as a whole provides a database from which the authors attempt to identify any interpretable trends or draw overall conclusions about the merits of existing conceptualizations, propositions, methods or findings ( Paré et al., 2015 ). In doing so, a descriptive review may claim that its findings represent the state of the art in a particular domain ( King & He, 2005 ).

In the fields of health sciences and medical informatics, reviews that focus on examining the range, nature and evolution of a topic area are described by Anderson, Allen, Peckham, and Goodwin (2008) as mapping reviews . Like descriptive reviews, the research questions are generic and usually relate to publication patterns and trends. There is no preconceived plan to systematically review all of the literature although this can be done. Instead, researchers often present studies that are representative of most works published in a particular area and they consider a specific time frame to be mapped.

An example of this approach in the eHealth domain is offered by DeShazo, Lavallie, and Wolf (2009). The purpose of this descriptive or mapping review was to characterize publication trends in the medical informatics literature over a 20-year period (1987 to 2006). To achieve this ambitious objective, the authors performed a bibliometric analysis of medical informatics citations indexed in medline using publication trends, journal frequencies, impact factors, Medical Subject Headings (MeSH) term frequencies, and characteristics of citations. Findings revealed that there were over 77,000 medical informatics articles published during the covered period in numerous journals and that the average annual growth rate was 12%. The MeSH term analysis also suggested a strong interdisciplinary trend. Finally, average impact scores increased over time with two notable growth periods. Overall, patterns in research outputs that seem to characterize the historic trends and current components of the field of medical informatics suggest it may be a maturing discipline (DeShazo et al., 2009).

9.3.3. Scoping Reviews

Scoping reviews attempt to provide an initial indication of the potential size and nature of the extant literature on an emergent topic (Arksey & O’Malley, 2005; Daudt, van Mossel, & Scott, 2013 ; Levac, Colquhoun, & O’Brien, 2010). A scoping review may be conducted to examine the extent, range and nature of research activities in a particular area, determine the value of undertaking a full systematic review (discussed next), or identify research gaps in the extant literature ( Paré et al., 2015 ). In line with their main objective, scoping reviews usually conclude with the presentation of a detailed research agenda for future works along with potential implications for both practice and research.

Unlike narrative and descriptive reviews, the whole point of scoping the field is to be as comprehensive as possible, including grey literature (Arksey & O’Malley, 2005). Inclusion and exclusion criteria must be established to help researchers eliminate studies that are not aligned with the research questions. It is also recommended that at least two independent coders review abstracts yielded from the search strategy and then the full articles for study selection ( Daudt et al., 2013 ). The synthesized evidence from content or thematic analysis is relatively easy to present in tabular form (Arksey & O’Malley, 2005; Thomas & Harden, 2008 ).

One of the most highly cited scoping reviews in the eHealth domain was published by Archer, Fevrier-Thomas, Lokker, McKibbon, and Straus (2011) . These authors reviewed the existing literature on personal health record ( phr ) systems including design, functionality, implementation, applications, outcomes, and benefits. Seven databases were searched from 1985 to March 2010. Several search terms relating to phr s were used during this process. Two authors independently screened titles and abstracts to determine inclusion status. A second screen of full-text articles, again by two independent members of the research team, ensured that the studies described phr s. All in all, 130 articles met the criteria and their data were extracted manually into a database. The authors concluded that although there is a large amount of survey, observational, cohort/panel, and anecdotal evidence of phr benefits and satisfaction for patients, more research is needed to evaluate the results of phr implementations. Their in-depth analysis of the literature signalled that there is little solid evidence from randomized controlled trials or other studies through the use of phr s. Hence, they suggested that more research is needed that addresses the current lack of understanding of optimal functionality and usability of these systems, and how they can play a beneficial role in supporting patient self-management ( Archer et al., 2011 ).

9.3.4. Forms of Aggregative Reviews

Healthcare providers, practitioners, and policy-makers are nowadays overwhelmed with large volumes of information, including research-based evidence from numerous clinical trials and evaluation studies, assessing the effectiveness of health information technologies and interventions ( Ammenwerth & de Keizer, 2004 ; Deshazo et al., 2009 ). It is unrealistic to expect that all these disparate actors will have the time, skills, and necessary resources to identify the available evidence in the area of their expertise and consider it when making decisions. Systematic reviews that involve the rigorous application of scientific strategies aimed at limiting subjectivity and bias (i.e., systematic and random errors) can respond to this challenge.

Systematic reviews attempt to aggregate, appraise, and synthesize in a single source all empirical evidence that meet a set of previously specified eligibility criteria in order to answer a clearly formulated and often narrow research question on a particular topic of interest to support evidence-based practice ( Liberati et al., 2009 ). They adhere closely to explicit scientific principles ( Liberati et al., 2009 ) and rigorous methodological guidelines (Higgins & Green, 2008) aimed at reducing random and systematic errors that can lead to deviations from the truth in results or inferences. The use of explicit methods allows systematic reviews to aggregate a large body of research evidence, assess whether effects or relationships are in the same direction and of the same general magnitude, explain possible inconsistencies between study results, and determine the strength of the overall evidence for every outcome of interest based on the quality of included studies and the general consistency among them ( Cook, Mulrow, & Haynes, 1997 ). The main procedures of a systematic review involve:

• Formulating a review question and developing a search strategy based on explicit inclusion criteria for the identification of eligible studies (usually described in the context of a detailed review protocol).
• Searching for eligible studies using multiple databases and information sources, including grey literature sources, without any language restrictions.
• Selecting studies, extracting data, and assessing risk of bias in a duplicate manner using two independent reviewers to avoid random or systematic errors in the process.
• Analyzing data using quantitative or qualitative methods.
• Presenting results in summary of findings tables.
• Interpreting results and drawing conclusions.

Many systematic reviews, but not all, use statistical methods to combine the results of independent studies into a single quantitative estimate or summary effect size. Known as meta-analyses , these reviews use specific data extraction and statistical techniques (e.g., network, frequentist, or Bayesian meta-analyses) to calculate from each study by outcome of interest an effect size along with a confidence interval that reflects the degree of uncertainty behind the point estimate of effect ( Borenstein, Hedges, Higgins, & Rothstein, 2009 ; Deeks, Higgins, & Altman, 2008 ). Subsequently, they use fixed or random-effects analysis models to combine the results of the included studies, assess statistical heterogeneity, and calculate a weighted average of the effect estimates from the different studies, taking into account their sample sizes. The summary effect size is a value that reflects the average magnitude of the intervention effect for a particular outcome of interest or, more generally, the strength of a relationship between two variables across all studies included in the systematic review. By statistically combining data from multiple studies, meta-analyses can create more precise and reliable estimates of intervention effects than those derived from individual studies alone, when these are examined independently as discrete sources of information.

The review by Gurol-Urganci, de Jongh, Vodopivec-Jamsek, Atun, and Car (2013) on the effects of mobile phone messaging reminders for attendance at healthcare appointments is an illustrative example of a high-quality systematic review with meta-analysis. Missed appointments are a major cause of inefficiency in healthcare delivery with substantial monetary costs to health systems. These authors sought to assess whether mobile phone-based appointment reminders delivered through Short Message Service ( sms ) or Multimedia Messaging Service ( mms ) are effective in improving rates of patient attendance and reducing overall costs. To this end, they conducted a comprehensive search on multiple databases using highly sensitive search strategies without language or publication-type restrictions to identify all rct s that are eligible for inclusion. In order to minimize the risk of omitting eligible studies not captured by the original search, they supplemented all electronic searches with manual screening of trial registers and references contained in the included studies. Study selection, data extraction, and risk of bias assessments were performed inde­­pen­dently by two coders using standardized methods to ensure consistency and to eliminate potential errors. Findings from eight rct s involving 6,615 participants were pooled into meta-analyses to calculate the magnitude of effects that mobile text message reminders have on the rate of attendance at healthcare appointments compared to no reminders and phone call reminders.

Meta-analyses are regarded as powerful tools for deriving meaningful conclusions. However, there are situations in which it is neither reasonable nor appropriate to pool studies together using meta-analytic methods simply because there is extensive clinical heterogeneity between the included studies or variation in measurement tools, comparisons, or outcomes of interest. In these cases, systematic reviews can use qualitative synthesis methods such as vote counting, content analysis, classification schemes and tabulations, as an alternative approach to narratively synthesize the results of the independent studies included in the review. This form of review is known as qualitative systematic review.

A rigorous example of one such review in the eHealth domain is presented by Mickan, Atherton, Roberts, Heneghan, and Tilson (2014) on the use of handheld computers by healthcare professionals and their impact on access to information and clinical decision-making. In line with the methodological guide­lines for systematic reviews, these authors: (a) developed and registered with prospero ( www.crd.york.ac.uk/ prospero / ) an a priori review protocol; (b) conducted comprehensive searches for eligible studies using multiple databases and other supplementary strategies (e.g., forward searches); and (c) subsequently carried out study selection, data extraction, and risk of bias assessments in a duplicate manner to eliminate potential errors in the review process. Heterogeneity between the included studies in terms of reported outcomes and measures precluded the use of meta-analytic methods. To this end, the authors resorted to using narrative analysis and synthesis to describe the effectiveness of handheld computers on accessing information for clinical knowledge, adherence to safety and clinical quality guidelines, and diagnostic decision-making.

In recent years, the number of systematic reviews in the field of health informatics has increased considerably. Systematic reviews with discordant findings can cause great confusion and make it difficult for decision-makers to interpret the review-level evidence ( Moher, 2013 ). Therefore, there is a growing need for appraisal and synthesis of prior systematic reviews to ensure that decision-making is constantly informed by the best available accumulated evidence. Umbrella reviews , also known as overviews of systematic reviews, are tertiary types of evidence synthesis that aim to accomplish this; that is, they aim to compare and contrast findings from multiple systematic reviews and meta-analyses ( Becker & Oxman, 2008 ). Umbrella reviews generally adhere to the same principles and rigorous methodological guidelines used in systematic reviews. However, the unit of analysis in umbrella reviews is the systematic review rather than the primary study ( Becker & Oxman, 2008 ). Unlike systematic reviews that have a narrow focus of inquiry, umbrella reviews focus on broader research topics for which there are several potential interventions ( Smith, Devane, Begley, & Clarke, 2011 ). A recent umbrella review on the effects of home telemonitoring interventions for patients with heart failure critically appraised, compared, and synthesized evidence from 15 systematic reviews to investigate which types of home telemonitoring technologies and forms of interventions are more effective in reducing mortality and hospital admissions ( Kitsiou, Paré, & Jaana, 2015 ).

9.3.5. Realist Reviews

Realist reviews are theory-driven interpretative reviews developed to inform, enhance, or supplement conventional systematic reviews by making sense of heterogeneous evidence about complex interventions applied in diverse contexts in a way that informs policy decision-making ( Greenhalgh, Wong, Westhorp, & Pawson, 2011 ). They originated from criticisms of positivist systematic reviews which centre on their “simplistic” underlying assumptions ( Oates, 2011 ). As explained above, systematic reviews seek to identify causation. Such logic is appropriate for fields like medicine and education where findings of randomized controlled trials can be aggregated to see whether a new treatment or intervention does improve outcomes. However, many argue that it is not possible to establish such direct causal links between interventions and outcomes in fields such as social policy, management, and information systems where for any intervention there is unlikely to be a regular or consistent outcome ( Oates, 2011 ; Pawson, 2006 ; Rousseau, Manning, & Denyer, 2008 ).

To circumvent these limitations, Pawson, Greenhalgh, Harvey, and Walshe (2005) have proposed a new approach for synthesizing knowledge that seeks to unpack the mechanism of how “complex interventions” work in particular contexts. The basic research question — what works? — which is usually associated with systematic reviews changes to: what is it about this intervention that works, for whom, in what circumstances, in what respects and why? Realist reviews have no particular preference for either quantitative or qualitative evidence. As a theory-building approach, a realist review usually starts by articulating likely underlying mechanisms and then scrutinizes available evidence to find out whether and where these mechanisms are applicable ( Shepperd et al., 2009 ). Primary studies found in the extant literature are viewed as case studies which can test and modify the initial theories ( Rousseau et al., 2008 ).

The main objective pursued in the realist review conducted by Otte-Trojel, de Bont, Rundall, and van de Klundert (2014) was to examine how patient portals contribute to health service delivery and patient outcomes. The specific goals were to investigate how outcomes are produced and, most importantly, how variations in outcomes can be explained. The research team started with an exploratory review of background documents and research studies to identify ways in which patient portals may contribute to health service delivery and patient outcomes. The authors identified six main ways which represent “educated guesses” to be tested against the data in the evaluation studies. These studies were identified through a formal and systematic search in four databases between 2003 and 2013. Two members of the research team selected the articles using a pre-established list of inclusion and exclusion criteria and following a two-step procedure. The authors then extracted data from the selected articles and created several tables, one for each outcome category. They organized information to bring forward those mechanisms where patient portals contribute to outcomes and the variation in outcomes across different contexts.

9.3.6. Critical Reviews

Lastly, critical reviews aim to provide a critical evaluation and interpretive analysis of existing literature on a particular topic of interest to reveal strengths, weaknesses, contradictions, controversies, inconsistencies, and/or other important issues with respect to theories, hypotheses, research methods or results ( Baumeister & Leary, 1997 ; Kirkevold, 1997 ). Unlike other review types, critical reviews attempt to take a reflective account of the research that has been done in a particular area of interest, and assess its credibility by using appraisal instruments or critical interpretive methods. In this way, critical reviews attempt to constructively inform other scholars about the weaknesses of prior research and strengthen knowledge development by giving focus and direction to studies for further improvement ( Kirkevold, 1997 ).

Kitsiou, Paré, and Jaana (2013) provide an example of a critical review that assessed the methodological quality of prior systematic reviews of home telemonitoring studies for chronic patients. The authors conducted a comprehensive search on multiple databases to identify eligible reviews and subsequently used a validated instrument to conduct an in-depth quality appraisal. Results indicate that the majority of systematic reviews in this particular area suffer from important methodological flaws and biases that impair their internal validity and limit their usefulness for clinical and decision-making purposes. To this end, they provide a number of recommendations to strengthen knowledge development towards improving the design and execution of future reviews on home telemonitoring.

9.4. Summary

Table 9.1 outlines the main types of literature reviews that were described in the previous sub-sections and summarizes the main characteristics that distinguish one review type from another. It also includes key references to methodological guidelines and useful sources that can be used by eHealth scholars and researchers for planning and developing reviews.

Typology of Literature Reviews (adapted from Paré et al., 2015).

As shown in Table 9.1 , each review type addresses different kinds of research questions or objectives, which subsequently define and dictate the methods and approaches that need to be used to achieve the overarching goal(s) of the review. For example, in the case of narrative reviews, there is greater flexibility in searching and synthesizing articles ( Green et al., 2006 ). Researchers are often relatively free to use a diversity of approaches to search, identify, and select relevant scientific articles, describe their operational characteristics, present how the individual studies fit together, and formulate conclusions. On the other hand, systematic reviews are characterized by their high level of systematicity, rigour, and use of explicit methods, based on an “a priori” review plan that aims to minimize bias in the analysis and synthesis process (Higgins & Green, 2008). Some reviews are exploratory in nature (e.g., scoping/mapping reviews), whereas others may be conducted to discover patterns (e.g., descriptive reviews) or involve a synthesis approach that may include the critical analysis of prior research ( Paré et al., 2015 ). Hence, in order to select the most appropriate type of review, it is critical to know before embarking on a review project, why the research synthesis is conducted and what type of methods are best aligned with the pursued goals.

9.5. Concluding Remarks

In light of the increased use of evidence-based practice and research generating stronger evidence ( Grady et al., 2011 ; Lyden et al., 2013 ), review articles have become essential tools for summarizing, synthesizing, integrating or critically appraising prior knowledge in the eHealth field. As mentioned earlier, when rigorously conducted review articles represent powerful information sources for eHealth scholars and practitioners looking for state-of-the-art evidence. The typology of literature reviews we used herein will allow eHealth researchers, graduate students and practitioners to gain a better understanding of the similarities and differences between review types.

We must stress that this classification scheme does not privilege any specific type of review as being of higher quality than another ( Paré et al., 2015 ). As explained above, each type of review has its own strengths and limitations. Having said that, we realize that the methodological rigour of any review — be it qualitative, quantitative or mixed — is a critical aspect that should be considered seriously by prospective authors. In the present context, the notion of rigour refers to the reliability and validity of the review process described in section 9.2. For one thing, reliability is related to the reproducibility of the review process and steps, which is facilitated by a comprehensive documentation of the literature search process, extraction, coding and analysis performed in the review. Whether the search is comprehensive or not, whether it involves a methodical approach for data extraction and synthesis or not, it is important that the review documents in an explicit and transparent manner the steps and approach that were used in the process of its development. Next, validity characterizes the degree to which the review process was conducted appropriately. It goes beyond documentation and reflects decisions related to the selection of the sources, the search terms used, the period of time covered, the articles selected in the search, and the application of backward and forward searches ( vom Brocke et al., 2009 ). In short, the rigour of any review article is reflected by the explicitness of its methods (i.e., transparency) and the soundness of the approach used. We refer those interested in the concepts of rigour and quality to the work of Templier and Paré (2015) which offers a detailed set of methodological guidelines for conducting and evaluating various types of review articles.

To conclude, our main objective in this chapter was to demystify the various types of literature reviews that are central to the continuous development of the eHealth field. It is our hope that our descriptive account will serve as a valuable source for those conducting, evaluating or using reviews in this important and growing domain.

• Ammenwerth E., de Keizer N. An inventory of evaluation studies of information technology in health care. Trends in evaluation research, 1982-2002. International Journal of Medical Informatics. 2004; 44 (1):44–56. [ PubMed : 15778794 ]
• Anderson S., Allen P., Peckham S., Goodwin N. Asking the right questions: scoping studies in the commissioning of research on the organisation and delivery of health services. Health Research Policy and Systems. 2008; 6 (7):1–12. [ PMC free article : PMC2500008 ] [ PubMed : 18613961 ] [ CrossRef ]
• Archer N., Fevrier-Thomas U., Lokker C., McKibbon K. A., Straus S.E. Personal health records: a scoping review. Journal of American Medical Informatics Association. 2011; 18 (4):515–522. [ PMC free article : PMC3128401 ] [ PubMed : 21672914 ]
• Arksey H., O’Malley L. Scoping studies: towards a methodological framework. International Journal of Social Research Methodology. 2005; 8 (1):19–32.
• A systematic, tool-supported method for conducting literature reviews in information systems. Paper presented at the Proceedings of the 19th European Conference on Information Systems ( ecis 2011); June 9 to 11; Helsinki, Finland. 2011.
• Baumeister R. F., Leary M.R. Writing narrative literature reviews. Review of General Psychology. 1997; 1 (3):311–320.
• Becker L. A., Oxman A.D. In: Cochrane handbook for systematic reviews of interventions. Higgins J. P. T., Green S., editors. Hoboken, nj : John Wiley & Sons, Ltd; 2008. Overviews of reviews; pp. 607–631.
• Borenstein M., Hedges L., Higgins J., Rothstein H. Introduction to meta-analysis. Hoboken, nj : John Wiley & Sons Inc; 2009.
• Cook D. J., Mulrow C. D., Haynes B. Systematic reviews: Synthesis of best evidence for clinical decisions. Annals of Internal Medicine. 1997; 126 (5):376–380. [ PubMed : 9054282 ]
• Cooper H., Hedges L.V. In: The handbook of research synthesis and meta-analysis. 2nd ed. Cooper H., Hedges L. V., Valentine J. C., editors. New York: Russell Sage Foundation; 2009. Research synthesis as a scientific process; pp. 3–17.
• Cooper H. M. Organizing knowledge syntheses: A taxonomy of literature reviews. Knowledge in Society. 1988; 1 (1):104–126.
• Cronin P., Ryan F., Coughlan M. Undertaking a literature review: a step-by-step approach. British Journal of Nursing. 2008; 17 (1):38–43. [ PubMed : 18399395 ]
• Darlow S., Wen K.Y. Development testing of mobile health interventions for cancer patient self-management: A review. Health Informatics Journal. 2015 (online before print). [ PubMed : 25916831 ] [ CrossRef ]
• Daudt H. M., van Mossel C., Scott S.J. Enhancing the scoping study methodology: a large, inter-professional team’s experience with Arksey and O’Malley’s framework. bmc Medical Research Methodology. 2013; 13 :48. [ PMC free article : PMC3614526 ] [ PubMed : 23522333 ] [ CrossRef ]
• Davies P. The relevance of systematic reviews to educational policy and practice. Oxford Review of Education. 2000; 26 (3-4):365–378.
• Deeks J. J., Higgins J. P. T., Altman D.G. In: Cochrane handbook for systematic reviews of interventions. Higgins J. P. T., Green S., editors. Hoboken, nj : John Wiley & Sons, Ltd; 2008. Analysing data and undertaking meta-analyses; pp. 243–296.
• Deshazo J. P., Lavallie D. L., Wolf F.M. Publication trends in the medical informatics literature: 20 years of “Medical Informatics” in mesh . bmc Medical Informatics and Decision Making. 2009; 9 :7. [ PMC free article : PMC2652453 ] [ PubMed : 19159472 ] [ CrossRef ]
• Dixon-Woods M., Agarwal S., Jones D., Young B., Sutton A. Synthesising qualitative and quantitative evidence: a review of possible methods. Journal of Health Services Research and Policy. 2005; 10 (1):45–53. [ PubMed : 15667704 ]
• Finfgeld-Connett D., Johnson E.D. Literature search strategies for conducting knowledge-building and theory-generating qualitative systematic reviews. Journal of Advanced Nursing. 2013; 69 (1):194–204. [ PMC free article : PMC3424349 ] [ PubMed : 22591030 ]
• Grady B., Myers K. M., Nelson E. L., Belz N., Bennett L., Carnahan L. … Guidelines Working Group. Evidence-based practice for telemental health. Telemedicine Journal and E Health. 2011; 17 (2):131–148. [ PubMed : 21385026 ]
• Green B. N., Johnson C. D., Adams A. Writing narrative literature reviews for peer-reviewed journals: secrets of the trade. Journal of Chiropractic Medicine. 2006; 5 (3):101–117. [ PMC free article : PMC2647067 ] [ PubMed : 19674681 ]
• Greenhalgh T., Wong G., Westhorp G., Pawson R. Protocol–realist and meta-narrative evidence synthesis: evolving standards ( rameses ). bmc Medical Research Methodology. 2011; 11 :115. [ PMC free article : PMC3173389 ] [ PubMed : 21843376 ]
• Gurol-Urganci I., de Jongh T., Vodopivec-Jamsek V., Atun R., Car J. Mobile phone messaging reminders for attendance at healthcare appointments. Cochrane Database System Review. 2013; 12 cd 007458. [ PMC free article : PMC6485985 ] [ PubMed : 24310741 ] [ CrossRef ]
• Hart C. Doing a literature review: Releasing the social science research imagination. London: SAGE Publications; 1998.
• Higgins J. P. T., Green S., editors. Cochrane handbook for systematic reviews of interventions: Cochrane book series. Hoboken, nj : Wiley-Blackwell; 2008.
• Jesson J., Matheson L., Lacey F.M. Doing your literature review: traditional and systematic techniques. Los Angeles & London: SAGE Publications; 2011.
• King W. R., He J. Understanding the role and methods of meta-analysis in IS research. Communications of the Association for Information Systems. 2005; 16 :1.
• Kirkevold M. Integrative nursing research — an important strategy to further the development of nursing science and nursing practice. Journal of Advanced Nursing. 1997; 25 (5):977–984. [ PubMed : 9147203 ]
• Kitchenham B., Charters S. ebse Technical Report Version 2.3. Keele & Durham. uk : Keele University & University of Durham; 2007. Guidelines for performing systematic literature reviews in software engineering.
• Kitsiou S., Paré G., Jaana M. Systematic reviews and meta-analyses of home telemonitoring interventions for patients with chronic diseases: a critical assessment of their methodological quality. Journal of Medical Internet Research. 2013; 15 (7):e150. [ PMC free article : PMC3785977 ] [ PubMed : 23880072 ]
• Kitsiou S., Paré G., Jaana M. Effects of home telemonitoring interventions on patients with chronic heart failure: an overview of systematic reviews. Journal of Medical Internet Research. 2015; 17 (3):e63. [ PMC free article : PMC4376138 ] [ PubMed : 25768664 ]
• Levac D., Colquhoun H., O’Brien K. K. Scoping studies: advancing the methodology. Implementation Science. 2010; 5 (1):69. [ PMC free article : PMC2954944 ] [ PubMed : 20854677 ]
• Levy Y., Ellis T.J. A systems approach to conduct an effective literature review in support of information systems research. Informing Science. 2006; 9 :181–211.
• Liberati A., Altman D. G., Tetzlaff J., Mulrow C., Gøtzsche P. C., Ioannidis J. P. A. et al. Moher D. The prisma statement for reporting systematic reviews and meta-analyses of studies that evaluate health care interventions: Explanation and elaboration. Annals of Internal Medicine. 2009; 151 (4):W-65. [ PubMed : 19622512 ]
• Lyden J. R., Zickmund S. L., Bhargava T. D., Bryce C. L., Conroy M. B., Fischer G. S. et al. McTigue K. M. Implementing health information technology in a patient-centered manner: Patient experiences with an online evidence-based lifestyle intervention. Journal for Healthcare Quality. 2013; 35 (5):47–57. [ PubMed : 24004039 ]
• Mickan S., Atherton H., Roberts N. W., Heneghan C., Tilson J.K. Use of handheld computers in clinical practice: a systematic review. bmc Medical Informatics and Decision Making. 2014; 14 :56. [ PMC free article : PMC4099138 ] [ PubMed : 24998515 ]
• Moher D. The problem of duplicate systematic reviews. British Medical Journal. 2013; 347 (5040) [ PubMed : 23945367 ] [ CrossRef ]
• Montori V. M., Wilczynski N. L., Morgan D., Haynes R. B., Hedges T. Systematic reviews: a cross-sectional study of location and citation counts. bmc Medicine. 2003; 1 :2. [ PMC free article : PMC281591 ] [ PubMed : 14633274 ]
• Mulrow C. D. The medical review article: state of the science. Annals of Internal Medicine. 1987; 106 (3):485–488. [ PubMed : 3813259 ] [ CrossRef ]
• Evidence-based information systems: A decade later. Proceedings of the European Conference on Information Systems ; 2011. Retrieved from http://aisel ​.aisnet.org/cgi/viewcontent ​.cgi?article ​=1221&context ​=ecis2011 .
• Okoli C., Schabram K. A guide to conducting a systematic literature review of information systems research. ssrn Electronic Journal. 2010
• Otte-Trojel T., de Bont A., Rundall T. G., van de Klundert J. How outcomes are achieved through patient portals: a realist review. Journal of American Medical Informatics Association. 2014; 21 (4):751–757. [ PMC free article : PMC4078283 ] [ PubMed : 24503882 ]
• Paré G., Trudel M.-C., Jaana M., Kitsiou S. Synthesizing information systems knowledge: A typology of literature reviews. Information & Management. 2015; 52 (2):183–199.
• Patsopoulos N. A., Analatos A. A., Ioannidis J.P. A. Relative citation impact of various study designs in the health sciences. Journal of the American Medical Association. 2005; 293 (19):2362–2366. [ PubMed : 15900006 ]
• Paul M. M., Greene C. M., Newton-Dame R., Thorpe L. E., Perlman S. E., McVeigh K. H., Gourevitch M.N. The state of population health surveillance using electronic health records: A narrative review. Population Health Management. 2015; 18 (3):209–216. [ PubMed : 25608033 ]
• Pawson R. Evidence-based policy: a realist perspective. London: SAGE Publications; 2006.
• Pawson R., Greenhalgh T., Harvey G., Walshe K. Realist review—a new method of systematic review designed for complex policy interventions. Journal of Health Services Research & Policy. 2005; 10 (Suppl 1):21–34. [ PubMed : 16053581 ]
• Petersen K., Vakkalanka S., Kuzniarz L. Guidelines for conducting systematic mapping studies in software engineering: An update. Information and Software Technology. 2015; 64 :1–18.
• Petticrew M., Roberts H. Systematic reviews in the social sciences: A practical guide. Malden, ma : Blackwell Publishing Co; 2006.
• Rousseau D. M., Manning J., Denyer D. Evidence in management and organizational science: Assembling the field’s full weight of scientific knowledge through syntheses. The Academy of Management Annals. 2008; 2 (1):475–515.
• Rowe F. What literature review is not: diversity, boundaries and recommendations. European Journal of Information Systems. 2014; 23 (3):241–255.
• Shea B. J., Hamel C., Wells G. A., Bouter L. M., Kristjansson E., Grimshaw J. et al. Boers M. amstar is a reliable and valid measurement tool to assess the methodological quality of systematic reviews. Journal of Clinical Epidemiology. 2009; 62 (10):1013–1020. [ PubMed : 19230606 ]
• Shepperd S., Lewin S., Straus S., Clarke M., Eccles M. P., Fitzpatrick R. et al. Sheikh A. Can we systematically review studies that evaluate complex interventions? PLoS Medicine. 2009; 6 (8):e1000086. [ PMC free article : PMC2717209 ] [ PubMed : 19668360 ]
• Silva B. M., Rodrigues J. J., de la Torre Díez I., López-Coronado M., Saleem K. Mobile-health: A review of current state in 2015. Journal of Biomedical Informatics. 2015; 56 :265–272. [ PubMed : 26071682 ]
• Smith V., Devane D., Begley C., Clarke M. Methodology in conducting a systematic review of systematic reviews of healthcare interventions. bmc Medical Research Methodology. 2011; 11 (1):15. [ PMC free article : PMC3039637 ] [ PubMed : 21291558 ]
• Sylvester A., Tate M., Johnstone D. Beyond synthesis: re-presenting heterogeneous research literature. Behaviour & Information Technology. 2013; 32 (12):1199–1215.
• Templier M., Paré G. A framework for guiding and evaluating literature reviews. Communications of the Association for Information Systems. 2015; 37 (6):112–137.
• Thomas J., Harden A. Methods for the thematic synthesis of qualitative research in systematic reviews. bmc Medical Research Methodology. 2008; 8 (1):45. [ PMC free article : PMC2478656 ] [ PubMed : 18616818 ]
• Reconstructing the giant: on the importance of rigour in documenting the literature search process. Paper presented at the Proceedings of the 17th European Conference on Information Systems ( ecis 2009); Verona, Italy. 2009.
• Webster J., Watson R.T. Analyzing the past to prepare for the future: Writing a literature review. Management Information Systems Quarterly. 2002; 26 (2):11.
• Whitlock E. P., Lin J. S., Chou R., Shekelle P., Robinson K.A. Using existing systematic reviews in complex systematic reviews. Annals of Internal Medicine. 2008; 148 (10):776–782. [ PubMed : 18490690 ]

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• Cite this Page Paré G, Kitsiou S. Chapter 9 Methods for Literature Reviews. In: Lau F, Kuziemsky C, editors. Handbook of eHealth Evaluation: An Evidence-based Approach [Internet]. Victoria (BC): University of Victoria; 2017 Feb 27.
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• Introduction
• Overview of the Literature Review Process and Steps
• Types of Review Articles and Brief Illustrations
• Concluding Remarks

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Research Article

Functional connectivity changes in the brain of adolescents with internet addiction: A systematic literature review of imaging studies

Roles Conceptualization, Data curation, Formal analysis, Investigation, Methodology, Project administration, Software, Validation, Visualization, Writing – original draft, Writing – review & editing

Affiliation Child and Adolescent Mental Health, Department of Brain Sciences, Great Ormond Street Institute of Child Health, University College London, London, United Kingdom

Roles Conceptualization, Supervision, Validation, Writing – review & editing

* E-mail: [email protected]

Affiliation Behavioural Brain Sciences Unit, Population Policy Practice Programme, Great Ormond Street Institute of Child Health, University College London, London, United Kingdom

• Max L. Y. Chang, 
• Irene O. Lee

• Published: June 4, 2024
• https://doi.org/10.1371/journal.pmen.0000022
• Peer Review
• Reader Comments

Internet usage has seen a stark global rise over the last few decades, particularly among adolescents and young people, who have also been diagnosed increasingly with internet addiction (IA). IA impacts several neural networks that influence an adolescent’s behaviour and development. This article issued a literature review on the resting-state and task-based functional magnetic resonance imaging (fMRI) studies to inspect the consequences of IA on the functional connectivity (FC) in the adolescent brain and its subsequent effects on their behaviour and development. A systematic search was conducted from two databases, PubMed and PsycINFO, to select eligible articles according to the inclusion and exclusion criteria. Eligibility criteria was especially stringent regarding the adolescent age range (10–19) and formal diagnosis of IA. Bias and quality of individual studies were evaluated. The fMRI results from 12 articles demonstrated that the effects of IA were seen throughout multiple neural networks: a mix of increases/decreases in FC in the default mode network; an overall decrease in FC in the executive control network; and no clear increase or decrease in FC within the salience network and reward pathway. The FC changes led to addictive behaviour and tendencies in adolescents. The subsequent behavioural changes are associated with the mechanisms relating to the areas of cognitive control, reward valuation, motor coordination, and the developing adolescent brain. Our results presented the FC alterations in numerous brain regions of adolescents with IA leading to the behavioural and developmental changes. Research on this topic had a low frequency with adolescent samples and were primarily produced in Asian countries. Future research studies of comparing results from Western adolescent samples provide more insight on therapeutic intervention.

Citation: Chang MLY, Lee IO (2024) Functional connectivity changes in the brain of adolescents with internet addiction: A systematic literature review of imaging studies. PLOS Ment Health 1(1): e0000022. https://doi.org/10.1371/journal.pmen.0000022

Editor: Kizito Omona, Uganda Martyrs University, UGANDA

Received: December 29, 2023; Accepted: March 18, 2024; Published: June 4, 2024

Copyright: © 2024 Chang, Lee. This is an open access article distributed under the terms of the Creative Commons Attribution License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Data Availability: All relevant data are within the paper and its Supporting information files.

Funding: The authors received no specific funding for this work.

Competing interests: The authors have declared that no competing interests exist.

Introduction

The behavioural addiction brought on by excessive internet use has become a rising source of concern [ 1 ] since the last decade. According to clinical studies, individuals with Internet Addiction (IA) or Internet Gaming Disorder (IGD) may have a range of biopsychosocial effects and is classified as an impulse-control disorder owing to its resemblance to pathological gambling and substance addiction [ 2 , 3 ]. IA has been defined by researchers as a person’s inability to resist the urge to use the internet, which has negative effects on their psychological well-being as well as their social, academic, and professional lives [ 4 ]. The symptoms can have serious physical and interpersonal repercussions and are linked to mood modification, salience, tolerance, impulsivity, and conflict [ 5 ]. In severe circumstances, people may experience severe pain in their bodies or health issues like carpal tunnel syndrome, dry eyes, irregular eating and disrupted sleep [ 6 ]. Additionally, IA is significantly linked to comorbidities with other psychiatric disorders [ 7 ].

Stevens et al (2021) reviewed 53 studies including 17 countries and reported the global prevalence of IA was 3.05% [ 8 ]. Asian countries had a higher prevalence (5.1%) than European countries (2.7%) [ 8 ]. Strikingly, adolescents and young adults had a global IGD prevalence rate of 9.9% which matches previous literature that reported historically higher prevalence among adolescent populations compared to adults [ 8 , 9 ]. Over 80% of adolescent population in the UK, the USA, and Asia have direct access to the internet [ 10 ]. Children and adolescents frequently spend more time on media (possibly 7 hours and 22 minutes per day) than at school or sleeping [ 11 ]. Developing nations have also shown a sharp rise in teenage internet usage despite having lower internet penetration rates [ 10 ]. Concerns regarding the possible harms that overt internet use could do to adolescents and their development have arisen because of this surge, especially the significant impacts by the COVID-19 pandemic [ 12 ]. The growing prevalence and neurocognitive consequences of IA among adolescents makes this population a vital area of study [ 13 ].

Adolescence is a crucial developmental stage during which people go through significant changes in their biology, cognition, and personalities [ 14 ]. Adolescents’ emotional-behavioural functioning is hyperactivated, which creates risk of psychopathological vulnerability [ 15 ]. In accordance with clinical study results [ 16 ], this emotional hyperactivity is supported by a high level of neuronal plasticity. This plasticity enables teenagers to adapt to the numerous physical and emotional changes that occur during puberty as well as develop communication techniques and gain independence [ 16 ]. However, the strong neuronal plasticity is also associated with risk-taking and sensation seeking [ 17 ] which may lead to IA.

Despite the fact that the precise neuronal mechanisms underlying IA are still largely unclear, functional magnetic resonance imaging (fMRI) method has been used by scientists as an important framework to examine the neuropathological changes occurring in IA, particularly in the form of functional connectivity (FC) [ 18 ]. fMRI research study has shown that IA alters both the functional and structural makeup of the brain [ 3 ].

We hypothesise that IA has widespread neurological alteration effects rather than being limited to a few specific brain regions. Further hypothesis holds that according to these alterations of FC between the brain regions or certain neural networks, adolescents with IA would experience behavioural changes. An investigation of these domains could be useful for creating better procedures and standards as well as minimising the negative effects of overt internet use. This literature review aims to summarise and analyse the evidence of various imaging studies that have investigated the effects of IA on the FC in adolescents. This will be addressed through two research questions:

• How does internet addiction affect the functional connectivity in the adolescent brain?
• How is adolescent behaviour and development impacted by functional connectivity changes due to internet addiction?

The review protocol was conducted in line with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines (see S1 Checklist ).

Search strategy and selection process

A systematic search was conducted up until April 2023 from two sources of database, PubMed and PsycINFO, using a range of terms relevant to the title and research questions (see full list of search terms in S1 Appendix ). All the searched articles can be accessed in the S1 Data . The eligible articles were selected according to the inclusion and exclusion criteria. Inclusion criteria used for the present review were: (i) participants in the studies with clinical diagnosis of IA; (ii) participants between the ages of 10 and 19; (iii) imaging research investigations; (iv) works published between January 2013 and April 2023; (v) written in English language; (vi) peer-reviewed papers and (vii) full text. The numbers of articles excluded due to not meeting the inclusion criteria are shown in Fig 1 . Each study’s title and abstract were screened for eligibility.

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https://doi.org/10.1371/journal.pmen.0000022.g001

Quality appraisal

Full texts of all potentially relevant studies were then retrieved and further appraised for eligibility. Furthermore, articles were critically appraised based on the GRADE (Grading of Recommendations, Assessment, Development, and Evaluations) framework to evaluate the individual study for both quality and bias. The subsequent quality levels were then appraised to each article and listed as either low, moderate, or high.

Data collection process

Data that satisfied the inclusion requirements was entered into an excel sheet for data extraction and further selection. An article’s author, publication year, country, age range, participant sample size, sex, area of interest, measures, outcome and article quality were all included in the data extraction spreadsheet. Studies looking at FC, for instance, were grouped, while studies looking at FC in specific area were further divided into sub-groups.

Data synthesis and analysis

Articles were classified according to their location in the brain as well as the network or pathway they were a part of to create a coherent narrative between the selected studies. Conclusions concerning various research trends relevant to particular groupings were drawn from these groupings and subgroupings. To maintain the offered information in a prominent manner, these assertions were entered into the data extraction excel spreadsheet.

With the search performed on the selected databases, 238 articles in total were identified (see Fig 1 ). 15 duplicated articles were eliminated, and another 6 items were removed for various other reasons. Title and abstract screening eliminated 184 articles because they were not in English (number of article, n, = 7), did not include imaging components (n = 47), had adult participants (n = 53), did not have a clinical diagnosis of IA (n = 19), did not address FC in the brain (n = 20), and were published outside the desired timeframe (n = 38). A further 21 papers were eliminated for failing to meet inclusion requirements after the remaining 33 articles underwent full-text eligibility screening. A total of 12 papers were deemed eligible for this review analysis.

Characteristics of the included studies, as depicted in the data extraction sheet in Table 1 provide information of the author(s), publication year, sample size, study location, age range, gender, area of interest, outcome, measures used and quality appraisal. Most of the studies in this review utilised resting state functional magnetic resonance imaging techniques (n = 7), with several studies demonstrating task-based fMRI procedures (n = 3), and the remaining studies utilising whole-brain imaging measures (n = 2). The studies were all conducted in Asiatic countries, specifically coming from China (8), Korea (3), and Indonesia (1). Sample sizes ranged from 12 to 31 participants with most of the imaging studies having comparable sample sizes. Majority of the studies included a mix of male and female participants (n = 8) with several studies having a male only participant pool (n = 3). All except one of the mixed gender studies had a majority male participant pool. One study did not disclose their data on the gender demographics of their experiment. Study years ranged from 2013–2022, with 2 studies in 2013, 3 studies in 2014, 3 studies in 2015, 1 study in 2017, 1 study in 2020, 1 study in 2021, and 1 study in 2022.

https://doi.org/10.1371/journal.pmen.0000022.t001

(1) How does internet addiction affect the functional connectivity in the adolescent brain?

The included studies were organised according to the brain region or network that they were observing. The specific networks affected by IA were the default mode network, executive control system, salience network and reward pathway. These networks are vital components of adolescent behaviour and development [ 31 ]. The studies in each section were then grouped into subsections according to their specific brain regions within their network.

Default mode network (DMN)/reward network.

Out of the 12 studies, 3 have specifically studied the default mode network (DMN), and 3 observed whole-brain FC that partially included components of the DMN. The effect of IA on the various centres of the DMN was not unilaterally the same. The findings illustrate a complex mix of increases and decreases in FC depending on the specific region in the DMN (see Table 2 and Fig 2 ). The alteration of FC in posterior cingulate cortex (PCC) in the DMN was the most frequently reported area in adolescents with IA, which involved in attentional processes [ 32 ], but Lee et al. (2020) additionally found alterations of FC in other brain regions, such as anterior insula cortex, a node in the DMN that controls the integration of motivational and cognitive processes [ 20 ].

https://doi.org/10.1371/journal.pmen.0000022.g002

The overall changes of functional connectivity in the brain network including default mode network (DMN), executive control network (ECN), salience network (SN) and reward network. IA = Internet Addiction, FC = Functional Connectivity.

https://doi.org/10.1371/journal.pmen.0000022.t002

Ding et al. (2013) revealed altered FC in the cerebellum, the middle temporal gyrus, and the medial prefrontal cortex (mPFC) [ 22 ]. They found that the bilateral inferior parietal lobule, left superior parietal lobule, and right inferior temporal gyrus had decreased FC, while the bilateral posterior lobe of the cerebellum and the medial temporal gyrus had increased FC [ 22 ]. The right middle temporal gyrus was found to have 111 cluster voxels (t = 3.52, p<0.05) and the right inferior parietal lobule was found to have 324 cluster voxels (t = -4.07, p<0.05) with an extent threshold of 54 voxels (figures above this threshold are deemed significant) [ 22 ]. Additionally, there was a negative correlation, with 95 cluster voxels (p<0.05) between the FC of the left superior parietal lobule and the PCC with the Chen Internet Addiction Scores (CIAS) which are used to determine the severity of IA [ 22 ]. On the other hand, in regions of the reward system, connection with the PCC was positively connected with CIAS scores [ 22 ]. The most significant was the right praecuneus with 219 cluster voxels (p<0.05) [ 22 ]. Wang et al. (2017) also discovered that adolescents with IA had 33% less FC in the left inferior parietal lobule and 20% less FC in the dorsal mPFC [ 24 ]. A potential connection between the effects of substance use and overt internet use is revealed by the generally decreased FC in these areas of the DMN of teenagers with drug addiction and IA [ 35 ].

The putamen was one of the main regions of reduced FC in adolescents with IA [ 19 ]. The putamen and the insula-operculum demonstrated significant group differences regarding functional connectivity with a cluster size of 251 and an extent threshold of 250 (Z = 3.40, p<0.05) [ 19 ]. The molecular mechanisms behind addiction disorders have been intimately connected to decreased striatal dopaminergic function [ 19 ], making this function crucial.

Executive Control Network (ECN).

5 studies out of 12 have specifically viewed parts of the executive control network (ECN) and 3 studies observed whole-brain FC. The effects of IA on the ECN’s constituent parts were consistent across all the studies examined for this analysis (see Table 2 and Fig 3 ). The results showed a notable decline in all the ECN’s major centres. Li et al. (2014) used fMRI imaging and a behavioural task to study response inhibition in adolescents with IA [ 25 ] and found decreased activation at the striatum and frontal gyrus, particularly a reduction in FC at inferior frontal gyrus, in the IA group compared to controls [ 25 ]. The inferior frontal gyrus showed a reduction in FC in comparison to the controls with a cluster size of 71 (t = 4.18, p<0.05) [ 25 ]. In addition, the frontal-basal ganglia pathways in the adolescents with IA showed little effective connection between areas and increased degrees of response inhibition [ 25 ].

https://doi.org/10.1371/journal.pmen.0000022.g003

Lin et al. (2015) found that adolescents with IA demonstrated disrupted corticostriatal FC compared to controls [ 33 ]. The corticostriatal circuitry experienced decreased connectivity with the caudate, bilateral anterior cingulate cortex (ACC), as well as the striatum and frontal gyrus [ 33 ]. The inferior ventral striatum showed significantly reduced FC with the subcallosal ACC and caudate head with cluster size of 101 (t = -4.64, p<0.05) [ 33 ]. Decreased FC in the caudate implies dysfunction of the corticostriatal-limbic circuitry involved in cognitive and emotional control [ 36 ]. The decrease in FC in both the striatum and frontal gyrus is related to inhibitory control, a common deficit seen with disruptions with the ECN [ 33 ].

The dorsolateral prefrontal cortex (DLPFC), ACC, and right supplementary motor area (SMA) of the prefrontal cortex were all found to have significantly decreased grey matter volume [ 29 ]. In addition, the DLPFC, insula, temporal cortices, as well as significant subcortical regions like the striatum and thalamus, showed decreased FC [ 29 ]. According to Tremblay (2009), the striatum plays a significant role in the processing of rewards, decision-making, and motivation [ 37 ]. Chen et al. (2020) reported that the IA group demonstrated increased impulsivity as well as decreased reaction inhibition using a Stroop colour-word task [ 26 ]. Furthermore, Chen et al. (2020) observed that the left DLPFC and dorsal striatum experienced a negative connection efficiency value, specifically demonstrating that the dorsal striatum activity suppressed the left DLPFC [ 27 ].

Salience network (SN).

Out of the 12 chosen studies, 3 studies specifically looked at the salience network (SN) and 3 studies have observed whole-brain FC. Relative to the DMN and ECN, the findings on the SN were slightly sparser. Despite this, adolescents with IA demonstrated a moderate decrease in FC, as well as other measures like fibre connectivity and cognitive control, when compared to healthy control (see Table 2 and Fig 4 ).

https://doi.org/10.1371/journal.pmen.0000022.g004

Xing et al. (2014) used both dorsal anterior cingulate cortex (dACC) and insula to test FC changes in the SN of adolescents with IA and found decreased structural connectivity in the SN as well as decreased fractional anisotropy (FA) that correlated to behaviour performance in the Stroop colour word-task [ 21 ]. They examined the dACC and insula to determine whether the SN’s disrupted connectivity may be linked to the SN’s disruption of regulation, which would explain the impaired cognitive control seen in adolescents with IA. However, researchers did not find significant FC differences in the SN when compared to the controls [ 21 ]. These results provided evidence for the structural changes in the interconnectivity within SN in adolescents with IA.

Wang et al. (2017) investigated network interactions between the DMN, ECN, SN and reward pathway in IA subjects [ 24 ] (see Fig 5 ), and found 40% reduction of FC between the DMN and specific regions of the SN, such as the insula, in comparison to the controls (p = 0.008) [ 24 ]. The anterior insula and dACC are two areas that are impacted by this altered FC [ 24 ]. This finding supports the idea that IA has similar neurobiological abnormalities with other addictive illnesses, which is in line with a study that discovered disruptive changes in the SN and DMN’s interaction in cocaine addiction [ 38 ]. The insula has also been linked to the intensity of symptoms and has been implicated in the development of IA [ 39 ].

“+” indicates an increase in behaivour; “-”indicates a decrease in behaviour; solid arrows indicate a direct network interaction; and the dotted arrows indicates a reduction in network interaction. This diagram depicts network interactions juxtaposed with engaging in internet related behaviours. Through the neural interactions, the diagram illustrates how the networks inhibit or amplify internet usage and vice versa. Furthermore, it demonstrates how the SN mediates both the DMN and ECN.

https://doi.org/10.1371/journal.pmen.0000022.g005

(2) How is adolescent behaviour and development impacted by functional connectivity changes due to internet addiction?

The findings that IA individuals demonstrate an overall decrease in FC in the DMN is supported by numerous research [ 24 ]. Drug addict populations also exhibited similar decline in FC in the DMN [ 40 ]. The disruption of attentional orientation and self-referential processing for both substance and behavioural addiction was then hypothesised to be caused by DMN anomalies in FC [ 41 ].

In adolescents with IA, decline of FC in the parietal lobule affects visuospatial task-related behaviour [ 22 ], short-term memory [ 42 ], and the ability of controlling attention or restraining motor responses during response inhibition tests [ 42 ]. Cue-induced gaming cravings are influenced by the DMN [ 43 ]. A visual processing area called the praecuneus links gaming cues to internal information [ 22 ]. A meta-analysis found that the posterior cingulate cortex activity of individuals with IA during cue-reactivity tasks was connected with their gaming time [ 44 ], suggesting that excessive gaming may impair DMN function and that individuals with IA exert more cognitive effort to control it. Findings for the behavioural consequences of FC changes in the DMN illustrate its underlying role in regulating impulsivity, self-monitoring, and cognitive control.

Furthermore, Ding et al. (2013) reported an activation of components of the reward pathway, including areas like the nucleus accumbens, praecuneus, SMA, caudate, and thalamus, in connection to the DMN [ 22 ]. The increased FC of the limbic and reward networks have been confirmed to be a major biomarker for IA [ 45 , 46 ]. The increased reinforcement in these networks increases the strength of reward stimuli and makes it more difficult for other networks, namely the ECN, to down-regulate the increased attention [ 29 ] (See Fig 5 ).

Executive control network (ECN).

The numerous IA-affected components in the ECN have a role in a variety of behaviours that are connected to both response inhibition and emotional regulation [ 47 ]. For instance, brain regions like the striatum, which are linked to impulsivity and the reward system, are heavily involved in the act of playing online games [ 47 ]. Online game play activates the striatum, which suppresses the left DLPFC in ECN [ 48 ]. As a result, people with IA may find it difficult to control their want to play online games [ 48 ]. This system thus causes impulsive and protracted gaming conduct, lack of inhibitory control leading to the continued use of internet in an overt manner despite a variety of negative effects, personal distress, and signs of psychological dependence [ 33 ] (See Fig 5 ).

Wang et al. (2017) report that disruptions in cognitive control networks within the ECN are frequently linked to characteristics of substance addiction [ 24 ]. With samples that were addicted to heroin and cocaine, previous studies discovered abnormal FC in the ECN and the PFC [ 49 ]. Electronic gaming is known to promote striatal dopamine release, similar to drug addiction [ 50 ]. According to Drgonova and Walther (2016), it is hypothesised that dopamine could stimulate the reward system of the striatum in the brain, leading to a loss of impulse control and a failure of prefrontal lobe executive inhibitory control [ 51 ]. In the end, IA’s resemblance to drug use disorders may point to vital biomarkers or underlying mechanisms that explain how cognitive control and impulsive behaviour are related.

A task-related fMRI study found that the decrease in FC between the left DLPFC and dorsal striatum was congruent with an increase in impulsivity in adolescents with IA [ 26 ]. The lack of response inhibition from the ECN results in a loss of control over internet usage and a reduced capacity to display goal-directed behaviour [ 33 ]. Previous studies have linked the alteration of the ECN in IA with higher cue reactivity and impaired ability to self-regulate internet specific stimuli [ 52 ].

Salience network (SN)/ other networks.

Xing et al. (2014) investigated the significance of the SN regarding cognitive control in teenagers with IA [ 21 ]. The SN, which is composed of the ACC and insula, has been demonstrated to control dynamic changes in other networks to modify cognitive performance [ 21 ]. The ACC is engaged in conflict monitoring and cognitive control, according to previous neuroimaging research [ 53 ]. The insula is a region that integrates interoceptive states into conscious feelings [ 54 ]. The results from Xing et al. (2014) showed declines in the SN regarding its structural connectivity and fractional anisotropy, even though they did not observe any appreciable change in FC in the IA participants [ 21 ]. Due to the small sample size, the results may have indicated that FC methods are not sensitive enough to detect the significant functional changes [ 21 ]. However, task performance behaviours associated with impaired cognitive control in adolescents with IA were correlated with these findings [ 21 ]. Our comprehension of the SN’s broader function in IA can be enhanced by this relationship.

Research study supports the idea that different psychological issues are caused by the functional reorganisation of expansive brain networks, such that strong association between SN and DMN may provide neurological underpinnings at the system level for the uncontrollable character of internet-using behaviours [ 24 ]. In the study by Wang et al. (2017), the decreased interconnectivity between the SN and DMN, comprising regions such the DLPFC and the insula, suggests that adolescents with IA may struggle to effectively inhibit DMN activity during internally focused processing, leading to poorly managed desires or preoccupations to use the internet [ 24 ] (See Fig 5 ). Subsequently, this may cause a failure to inhibit DMN activity as well as a restriction of ECN functionality [ 55 ]. As a result, the adolescent experiences an increased salience and sensitivity towards internet addicting cues making it difficult to avoid these triggers [ 56 ].

The primary aim of this review was to present a summary of how internet addiction impacts on the functional connectivity of adolescent brain. Subsequently, the influence of IA on the adolescent brain was compartmentalised into three sections: alterations of FC at various brain regions, specific FC relationships, and behavioural/developmental changes. Overall, the specific effects of IA on the adolescent brain were not completely clear, given the variety of FC changes. However, there were overarching behavioural, network and developmental trends that were supported that provided insight on adolescent development.

The first hypothesis that was held about this question was that IA was widespread and would be regionally similar to substance-use and gambling addiction. After conducting a review of the information in the chosen articles, the hypothesis was predictably supported. The regions of the brain affected by IA are widespread and influence multiple networks, mainly DMN, ECN, SN and reward pathway. In the DMN, there was a complex mix of increases and decreases within the network. However, in the ECN, the alterations of FC were more unilaterally decreased, but the findings of SN and reward pathway were not quite clear. Overall, the FC changes within adolescents with IA are very much network specific and lay a solid foundation from which to understand the subsequent behaviour changes that arise from the disorder.

The second hypothesis placed emphasis on the importance of between network interactions and within network interactions in the continuation of IA and the development of its behavioural symptoms. The results from the findings involving the networks, DMN, SN, ECN and reward system, support this hypothesis (see Fig 5 ). Studies confirm the influence of all these neural networks on reward valuation, impulsivity, salience to stimuli, cue reactivity and other changes that alter behaviour towards the internet use. Many of these changes are connected to the inherent nature of the adolescent brain.

There are multiple explanations that underlie the vulnerability of the adolescent brain towards IA related urges. Several of them have to do with the inherent nature and underlying mechanisms of the adolescent brain. Children’s emotional, social, and cognitive capacities grow exponentially during childhood and adolescence [ 57 ]. Early teenagers go through a process called “social reorientation” that is characterised by heightened sensitivity to social cues and peer connections [ 58 ]. Adolescents’ improvements in their social skills coincide with changes in their brains’ anatomical and functional organisation [ 59 ]. Functional hubs exhibit growing connectivity strength [ 60 ], suggesting increased functional integration during development. During this time, the brain’s functional networks change from an anatomically dominant structure to a scattered architecture [ 60 ].

The adolescent brain is very responsive to synaptic reorganisation and experience cues [ 61 ]. As a result, one of the distinguishing traits of the maturation of adolescent brains is the variation in neural network trajectory [ 62 ]. Important weaknesses of the adolescent brain that may explain the neurobiological change brought on by external stimuli are illustrated by features like the functional gaps between networks and the inadequate segregation of networks [ 62 ].

The implications of these findings towards adolescent behaviour are significant. Although the exact changes and mechanisms are not fully clear, the observed changes in functional connectivity have the capacity of influencing several aspects of adolescent development. For example, functional connectivity has been utilised to investigate attachment styles in adolescents [ 63 ]. It was observed that adolescent attachment styles were negatively associated with caudate-prefrontal connectivity, but positively with the putamen-visual area connectivity [ 63 ]. Both named areas were also influenced by the onset of internet addiction, possibly providing a connection between the two. Another study associated neighbourhood/socioeconomic disadvantage with functional connectivity alterations in the DMN and dorsal attention network [ 64 ]. The study also found multivariate brain behaviour relationships between the altered/disadvantaged functional connectivity and mental health and cognition [ 64 ]. This conclusion supports the notion that the functional connectivity alterations observed in IA are associated with specific adolescent behaviours as well as the fact that functional connectivity can be utilised as a platform onto which to compare various neurologic conditions.

Limitations/strengths

There were several limitations that were related to the conduction of the review as well as the data extracted from the articles. Firstly, the study followed a systematic literature review design when analysing the fMRI studies. The data pulled from these imaging studies were namely qualitative and were subject to bias contrasting the quantitative nature of statistical analysis. Components of the study, such as sample sizes, effect sizes, and demographics were not weighted or controlled. The second limitation brought up by a similar review was the lack of a universal consensus of terminology given IA [ 47 ]. Globally, authors writing about this topic use an array of terminology including online gaming addiction, internet addiction, internet gaming disorder, and problematic internet use. Often, authors use multiple terms interchangeably which makes it difficult to depict the subtle similarities and differences between the terms.

Reviewing the explicit limitations in each of the included studies, two major limitations were brought up in many of the articles. One was relating to the cross-sectional nature of the included studies. Due to the inherent qualities of a cross-sectional study, the studies did not provide clear evidence that IA played a causal role towards the development of the adolescent brain. While several biopsychosocial factors mediate these interactions, task-based measures that combine executive functions with imaging results reinforce the assumed connection between the two that is utilised by the papers studying IA. Another limitation regarded the small sample size of the included studies, which averaged to around 20 participants. The small sample size can influence the generalisation of the results as well as the effectiveness of statistical analyses. Ultimately, both included study specific limitations illustrate the need for future studies to clarify the causal relationship between the alterations of FC and the development of IA.

Another vital limitation was the limited number of studies applying imaging techniques for investigations on IA in adolescents were a uniformly Far East collection of studies. The reason for this was because the studies included in this review were the only fMRI studies that were found that adhered to the strict adolescent age restriction. The adolescent age range given by the WHO (10–19 years old) [ 65 ] was strictly followed. It is important to note that a multitude of studies found in the initial search utilised an older adolescent demographic that was slightly higher than the WHO age range and had a mean age that was outside of the limitations. As a result, the results of this review are biased and based on the 12 studies that met the inclusion and exclusion criteria.

Regarding the global nature of the research, although the journals that the studies were published in were all established western journals, the collection of studies were found to all originate from Asian countries, namely China and Korea. Subsequently, it pulls into question if the results and measures from these studies are generalisable towards a western population. As stated previously, Asian countries have a higher prevalence of IA, which may be the reasoning to why the majority of studies are from there [ 8 ]. However, in an additional search including other age groups, it was found that a high majority of all FC studies on IA were done in Asian countries. Interestingly, western papers studying fMRI FC were primarily focused on gambling and substance-use addiction disorders. The western papers on IA were less focused on fMRI FC but more on other components of IA such as sleep, game-genre, and other non-imaging related factors. This demonstrated an overall lack of western fMRI studies on IA. It is important to note that both western and eastern fMRI studies on IA presented an overall lack on children and adolescents in general.

Despite the several limitations, this review provided a clear reflection on the state of the data. The strengths of the review include the strict inclusion/exclusion criteria that filtered through studies and only included ones that contained a purely adolescent sample. As a result, the information presented in this review was specific to the review’s aims. Given the sparse nature of adolescent specific fMRI studies on the FC changes in IA, this review successfully provided a much-needed niche representation of adolescent specific results. Furthermore, the review provided a thorough functional explanation of the DMN, ECN, SN and reward pathway making it accessible to readers new to the topic.

Future directions and implications

Through the search process of the review, there were more imaging studies focused on older adolescence and adulthood. Furthermore, finding a review that covered a strictly adolescent population, focused on FC changes, and was specifically depicting IA, was proven difficult. Many related reviews, such as Tereshchenko and Kasparov (2019), looked at risk factors related to the biopsychosocial model, but did not tackle specific alterations in specific structural or functional changes in the brain [ 66 ]. Weinstein (2017) found similar structural and functional results as well as the role IA has in altering response inhibition and reward valuation in adolescents with IA [ 47 ]. Overall, the accumulated findings only paint an emerging pattern which aligns with similar substance-use and gambling disorders. Future studies require more specificity in depicting the interactions between neural networks, as well as more literature on adolescent and comorbid populations. One future field of interest is the incorporation of more task-based fMRI data. Advances in resting-state fMRI methods have yet to be reflected or confirmed in task-based fMRI methods [ 62 ]. Due to the fact that network connectivity is shaped by different tasks, it is critical to confirm that the findings of the resting state fMRI studies also apply to the task based ones [ 62 ]. Subsequently, work in this area will confirm if intrinsic connectivity networks function in resting state will function similarly during goal directed behaviour [ 62 ]. An elevated focus on adolescent populations as well as task-based fMRI methodology will help uncover to what extent adolescent network connectivity maturation facilitates behavioural and cognitive development [ 62 ].

A treatment implication is the potential usage of bupropion for the treatment of IA. Bupropion has been previously used to treat patients with gambling disorder and has been effective in decreasing overall gambling behaviour as well as money spent while gambling [ 67 ]. Bae et al. (2018) found a decrease in clinical symptoms of IA in line with a 12-week bupropion treatment [ 31 ]. The study found that bupropion altered the FC of both the DMN and ECN which in turn decreased impulsivity and attentional deficits for the individuals with IA [ 31 ]. Interventions like bupropion illustrate the importance of understanding the fundamental mechanisms that underlie disorders like IA.

The goal for this review was to summarise the current literature on functional connectivity changes in adolescents with internet addiction. The findings answered the primary research questions that were directed at FC alterations within several networks of the adolescent brain and how that influenced their behaviour and development. Overall, the research demonstrated several wide-ranging effects that influenced the DMN, SN, ECN, and reward centres. Additionally, the findings gave ground to important details such as the maturation of the adolescent brain, the high prevalence of Asian originated studies, and the importance of task-based studies in this field. The process of making this review allowed for a thorough understanding IA and adolescent brain interactions.

Given the influx of technology and media in the lives and education of children and adolescents, an increase in prevalence and focus on internet related behavioural changes is imperative towards future children/adolescent mental health. Events such as COVID-19 act to expose the consequences of extended internet usage on the development and lifestyle of specifically young people. While it is important for parents and older generations to be wary of these changes, it is important for them to develop a base understanding of the issue and not dismiss it as an all-bad or all-good scenario. Future research on IA will aim to better understand the causal relationship between IA and psychological symptoms that coincide with it. The current literature regarding functional connectivity changes in adolescents is limited and requires future studies to test with larger sample sizes, comorbid populations, and populations outside Far East Asia.

This review aimed to demonstrate the inner workings of how IA alters the connection between the primary behavioural networks in the adolescent brain. Predictably, the present answers merely paint an unfinished picture that does not necessarily depict internet usage as overwhelmingly positive or negative. Alternatively, the research points towards emerging patterns that can direct individuals on the consequences of certain variables or risk factors. A clearer depiction of the mechanisms of IA would allow physicians to screen and treat the onset of IA more effectively. Clinically, this could be in the form of more streamlined and accurate sessions of CBT or family therapy, targeting key symptoms of IA. Alternatively clinicians could potentially prescribe treatment such as bupropion to target FC in certain regions of the brain. Furthermore, parental education on IA is another possible avenue of prevention from a public health standpoint. Parents who are aware of the early signs and onset of IA will more effectively handle screen time, impulsivity, and minimize the risk factors surrounding IA.

Additionally, an increased attention towards internet related fMRI research is needed in the West, as mentioned previously. Despite cultural differences, Western countries may hold similarities to the eastern countries with a high prevalence of IA, like China and Korea, regarding the implications of the internet and IA. The increasing influence of the internet on the world may contribute to an overall increase in the global prevalence of IA. Nonetheless, the high saturation of eastern studies in this field should be replicated with a Western sample to determine if the same FC alterations occur. A growing interest in internet related research and education within the West will hopefully lead to the knowledge of healthier internet habits and coping strategies among parents with children and adolescents. Furthermore, IA research has the potential to become a crucial proxy for which to study adolescent brain maturation and development.

Supporting information

S1 checklist. prisma checklist..

https://doi.org/10.1371/journal.pmen.0000022.s001

S1 Appendix. Search strategies with all the terms.

https://doi.org/10.1371/journal.pmen.0000022.s002

S1 Data. Article screening records with details of categorized content.

https://doi.org/10.1371/journal.pmen.0000022.s003

Acknowledgments

The authors thank https://www.stockio.com/free-clipart/brain-01 (with attribution to Stockio.com); and https://www.rawpixel.com/image/6442258/png-sticker-vintage for the free images used to create Figs 2 – 4 .

• View Article
• PubMed/NCBI
• Google Scholar
• 2. Association AP. Diagnostic and statistical manual of mental disorders: DSM-5. 5 ed. Washington, D.C.: American Psychiatric Publishing; 2013.
• 10. Stats IW. World Internet Users Statistics and World Population Stats 2013 [ http://www.internetworldstats.com/stats.htm .
• 11. Rideout VJR M. B. The common sense census: media use by tweens and teens. San Francisco, CA: Common Sense Media; 2019.
• 37. Tremblay L. The Ventral Striatum. Handbook of Reward and Decision Making: Academic Press; 2009.
• 57. Bhana A. Middle childhood and pre-adolescence. Promoting mental health in scarce-resource contexts: emerging evidence and practice. Cape Town: HSRC Press; 2010. p. 124–42.
• 65. Organization WH. Adolescent Health 2023 [ https://www.who.int/health-topics/adolescent-health#tab=tab_1 .

College & Research Libraries News  ( C&RL News ) is the official newsmagazine and publication of record of the Association of College & Research Libraries,  providing articles on the latest trends and practices affecting academic and research libraries.

C&RL News  became an online-only publication beginning with the January 2022 issue.

Members of the ACRL Research Planning and Review Committee: Brian D. Quigley (chair) is head of the sciences division at the University of California, Berkeley Library, email: [email protected] . Thomas R. Caswell (vice-chair) is associate dean for academic engagement at the University of Central Florida Libraries, email: [email protected] . Jennie M. Burroughs is senior program advisor and researcher at the University of Minnesota Libraries, email: [email protected] . Laura Costello is director of access and information services at the University of Minnesota Libraries, email: [email protected] . cristalan ‘tal’ ness is linguistics librarian and social sciences resident librarian at the University of Michigan, email: [email protected] . Kristin Van Diest is digital publishing librarian at Texas State University, email: [email protected] . Minglu Wang is research data management librarian at York University, email: [email protected] . Anna Yang is science librarian at Santa Clara University, email: [email protected] .

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ACRL Research Planning and Review Committee

2024 Top Trends in Academic Libraries

A Review of the Trends and Issues

T his article explores the topics and issues that have been trending in academic libraries over the past two years. It draws on research and initiatives from librarians across the profession, highlighting the constant change libraries face. The launch of ChatGPT sparked discussions about the potential impact of artificial intelligence, open access and open science initiatives continued to gain momentum, and the lingering effects of COVID-19 on library workspaces and student well-being remained significant. Rich citations to the literature provide opportunities for further exploration.

AI and AI Literacy

Artificial intelligence (AI) has been a trend in academic libraries for several years, but the release of ChatGPT and other generative AI tools has sparked renewed interest in the topic. This could have profound implications for academic libraries in the future. As Andrew M. Cox and Suvodeep Mazumdar note, “There is immense potential for it to increase access to knowledge in fundamental ways, for example through improved search and recommendation, through description of digital materials at scale, through transcription, and through automated translation.” 1 AI also raises a host of ethical and legal issues, ranging from concerns about bias, privacy, non-representative training data, and misinformation to issues around copyright, plagiarism, and exploitation. 2

Due to their ease of use, generative AI tools like ChatGPT have become extremely popular. These tools leverage large language models (LLMs) trained on massive datasets of text or images. LLMs use neural networks and natural language processing to analyze input prompts and generate responses based on the statistical patterns learned from the training data. Beyond ChatGPT, AI is also being incorporated into literature searching, summarization, and programming tools such as Elicit, Semantic Scholar, scite, and Copilot for GitHub. 3 With the growing popularity of these tools among students, faculty are increasingly turning to librarians to help cultivate AI literacy, discussing AI and its impact on literature searching and citations with their classes. 4

Duri Long and Brian Magerko define AI literacy “as a set of competencies that enables individuals to critically evaluate AI technologies; communicate and collaborate effectively with AI; and use AI as a tool online, at home, and in the workplace.” 5 Leo S. Lo outlines a framework to assist librarians and students in developing more effective prompts for generative AI, a process called prompt engineering. As he states, using his framework, “librarians can help students develop critical thinking skills, improve their comprehension of AI-generated content, and optimize AI-based research processes.” 6 It is also important to raise awareness among students of the potential problems associated with AI including accuracy, hallucinations, bias, ethical issues, and environmental impact. Some institutions have begun developing workshop series to discuss and facilitate conversations with students about these issues, 7 and the University of Florida has started an AI Across the Curriculum initiative to introduce all undergraduate students to AI and better prepare them for the future workforce. 8

Academic libraries have also been pursuing possible roles for AI within the library itself. This has included setting up AI research spaces, exploring robotics, investigating ethical issues and implicit bias in machine learning, and experimenting with using AI to classify images, refine metadata, and improve discovery. 9 Many also see a broader role for libraries within the AI landscape. Fiona Bradley calls for libraries to be involved in AI discussions at the national level and notes that “the sector is already participating in consultations and processes to ensure that the future of AI is rights-based, ethical, and transparent.” 10

Open Pedagogy and Instructional Design

Although open educational resource (OER) initiatives are not new, libraries have recently begun expanding their impact by investigating the potential to enrich student learning through open pedagogy. In their timely book, Mary Ann Cullen and Elizabeth Dill explore the foundation, approaches, and implementation of open pedagogy as a strategy for information literacy in higher education. 11 Open pedagogy requires students to be actively involved in the design, creation, and curation of OER learning materials through renewable assignments. These assignments invite students to contribute to the production and dissemination of knowledge, pushing them past more traditional library projects. Wikipedia assignments are among the most popular forms of renewable assignments, encouraging students to find, evaluate, and improve upon the information on its pages. 12 Other examples of renewable assignments include creating research toolkits, online courses, ebooks, and living websites. 13 Each of these renewable assignments allows students to see themselves as active creators of information rather than passive consumers.

According to Eric Werth and Katherine Williams, to increase student motivation, “OER-enabled pedagogy must be structured in a way that allows autonomy, competence, and relatedness.” 14 Aligning OER projects with practical and real-world knowledge can positively impact student engagement. 15 At the heart of this engagement is inclusive practice. By creating a supportive environment where all students have access to the same materials, instructors foster inclusivity in their courses. 16 Instructors can also motivate students to see the value of open pedagogy by helping them find their own interests and passion within these assignments, 17 showing students that they have control over their content, 18 and demonstrating that their work can have a global impact. 19

Concerns have been raised about the high workload and long-term sustainability of open pedagogy. Kate McNally Carter and Ariana Santiago find that “workload was often minimized or entirely overlooked as a factor in many studies in favor of highlighting student success outcomes” and advise working toward sustainability by creating adaptable renewable assignments that can fit into many contexts and subject areas. 20 Bryan McGeary, Christopher Guder, and Ashwini Ganeshan further suggest that broad groups of staff should contribute to this important work for OER-enabled pedagogy to be sustainable. 21

Open Science and Reproducibility

As early advocates for open access and research data management, libraries are now assessing their potential roles in the burgeoning open science movement, which increasingly emphasizes equity, collaboration, reproducibility, security, and privacy in supporting the whole research ecosystem. 22 Much of this recent interest in open science has been spurred by the federal government, with US agencies collaborating on the Year of Open Science campaign, and NASA launching its Transform to Open Science (TOPS) initiative and Open Science 101 virtual training. 23 At the institutional level, many universities and libraries have joined the Higher Education Leadership Initiative for Open Scholarship (HELIOS Open), which aims to collaborate on “a more transparent, inclusive, and trustworthy research ecosystem” through presidential commitment, campus engagement, and communities of practice. 24

As open scholarship gains momentum, libraries face growing calls to expand their roles beyond technical support. Authors from UNESCO emphasize the need for libraries to be “a bridge between local contexts and the global scholarly community,” 25 while LIBER (Association of European Research Libraries) identifies “advancing open science” as a core component of its strategy, aiming for libraries to “stimulate, facilitate, co-develop and manage infrastructures and practices designed to take Open Science to the next level.” 26 Reflecting these calls, a recent book from ACRL positions open science as “an emerging synthesis of the various streams of open.” 27 It recommends changes to incentive structures and urges consolidation of siloed services to create an open infrastructure aligned with open research values and available equally to all researchers. By promoting open practices and facilitating infrastructure development, libraries can solidify their place as leaders in the evolving open scholarship landscape.

As advocates for open science, libraries also contribute to one of its key outcomes: reproducibility. 28 This new area of service requires librarians to become deeply integrated in research communities, understanding researchers’ needs and tools while simultaneously leveraging their unique position as institutional hubs to connect stakeholders and research services partners. 29 Thanks to stricter National Institutes of Health demands for research rigor and reproducibility, health science librarians have emerged as key players in educating researchers on these topics. Their success stories showcase libraries’ potential to deliver valuable instruction in this crucial area, while also underlining the critical need for collaborative partnerships to further enhance research reproducibility services. 30

Open Access and Equitable Publishing

In the wake of recent calls for more open research publication practices, researchers have been exploring the impact of article processing charges, transformative agreements, open access models, and new policy development on equity and access in publishing practices.

Findings show that faculty perceptions of open access publishing have remained virtually the same over the past twenty years, citing commonplace challenges that have yet to be resolved: uncertainty around the prestige of open access journals, confusion around types of open access, and lack of clarity and acceptance of open access in the promotion and tenure process. 31 On the other hand, students increasingly rely on open access articles in their assignments. A study of community college students found that 56.8% of their citations were open access articles, with one key benefit being that they “will still have access to open access search tools after they are no longer in college.” 32

Within that context, many researchers feel that the open access movement has been co-opted by commercial publishers and are advocating for a return to scholar-led publishing communities. Discussing the global limitations of corporate publishing, several authors urge libraries and consortia to support their research communities by avoiding bundled publishing service agreements, contributing to scholar-led initiatives, and redistributing funds to support the Global South. 33 In addition, there is growing understanding that open access does not necessarily mean universal accessibility. Multiple authors have shed light on the inequities within open access publishing, including design practices and publishing cost structures that are exclusionary; researchers recommend libraries focus on integrating accessibility practices into design 34 and support bibliodiversity to emphasize “the critical diversity of authors and scholarly works representing cultures, languages, genres and all kinds of scholarly and scientific endeavours.” 35

A series of new tools and proposals have recently been released to guide libraries and scholars as they work to support a values-driven publishing ecosystem. These guidelines call for systems that enable scholars to choose when their research is made public and decenter the journal article as the sole object of importance in the research lifecycle, 36 encourage libraries to align their publishing infrastructure and practices with key values and ethical frameworks, 37 and propose helping “new and established open access journals in navigating the rapidly changing landscape of open access publishing.” 38

Disrupting and Reconceiving Collection Practices

While there had been actions and initiatives relating to diversity, equity, and inclusion (DEI) in libraries before 2020, much of that effort consisted of broad advocacy and raising awareness. 39 Libraries are increasingly recognizing that making good on public statements will require firm resource commitments, disruption of existing systems, and sustained action in multiple arenas. 40 This work requires deep reflection and disruption: deconstructing systems for collecting and describing materials, deconstructing myths of librarian authority, and deconstructing student assumptions about information.

In recent years, libraries have begun putting more attention and action into re-evaluating library collections and collection management practices. Auditing collections through a social justice lens or to address colonialist and Euro-centric practices involves re-examining values, defining what “diversity” means in the context of collections, and setting tangible markers for progress. 41 In setting these parameters, it’s important to “embrace imperfection,” 42 which might include defining a more targeted goal or an initial starting point. 43 In each case, these efforts are leading to a re-examination of acquisition practices and systems, including approval plans and demand-driven acquisition programs, which may “amplify biases already present in the higher education and publishing industries.” 44

In addition to reallocating collection funds, libraries acting to make their collections more diverse and inclusive are reconsidering personnel commitments and involving more people in collection activities. Reversing earlier trends, some libraries are increasing staff time on collection development and cataloging, and they are partnering with underrepresented communities to select and describe materials. 45 This involves multiple points of outreach and consultation over the course of a project, and it requires libraries to embrace the complexities that their partners share about working with multiple communities. 46 Regardless of approach, libraries will need to consider how to sustain these improvements in collection building and management practices throughout changes in budgets, leadership, and staffing levels. 47

Politicization of Academic Libraries

The landscape of academic libraries continues to be significantly impacted and shaped by a highly political and polarizing climate. As academic libraries navigate this landscape, it becomes crucial for them to strike a balance between neutrality and civic engagement, acknowledging the inherent political dimensions of their collections, programs, and spaces. They must continue to maintain an active role in the enactment of democracy, despite ongoing and future threats.

Renowned scholar John Buschmann contends in several scholarly publications that libraries historically play an important role in the democratic fabric of society and navigate crises while persisting through terrorist acts, 48 politically charged environments, 49 and pandemics. 50 Even during extreme geopolitical crises like wars and international sanctions, libraries are implicated as active participants in affecting and responding to the complex sociopolitical environment they inhabit. 51 In trying to counter fake news rhetoric, libraries can unintentionally be drawn into political processes by simply providing research services and fighting misinformation and disinformation. 52 In one study, several land-grant university library websites were analyzed and found to indeed be “serving as significant providers of political information during politically turbulent times.” 53

Although censorship of library collections using “book bans” has primarily affected public libraries, academic libraries now find they too are being drawn into this heated dialogue, especially surrounding social justice, DEI, and antiracism initiatives. Zoë Abbie Teel contends that anti-DEI legislation may extend its impact to potentially influence library policies and acquisitions, including “the availability of certain materials’’ that may be seen as promoting DEI. 54 The question of whether libraries can remain “neutral” in the face of social injustice has created debate among library practitioners. 55 Steve Rosato discusses the role of academic librarians and publishers as “vanguards” of critical DEI content, 56 and Annis Lee Adams presents an array of antiracism resources to support library staff, emphasizing the active role libraries play in addressing racial issues. 57 Libraries can also amplify their antiracism resources by partnering with other campus stakeholders. 58 Two articles highlight the need for libraries to actively support inclusivity, with Qing H. Stellwagen and Steven Bingo emphasizing cultural celebrations as a means of creating a sense of community on campus 59 and Silvia Vong discussing the impact of racial capitalism on academic librarians and libraries, specifically focusing on issues of representation and equity within library staff. 60

Anti-DEI Legislation, Academic Freedom, and Unionization

In recent years, academic librarians and library staff have experienced the growing challenge of low morale and burnout. 61 Compounding this for many staff, a recent wave of anti-DEI legislation has been introduced and passed in many states. These laws impose restrictions on DEI offices, staff training, diversity statements, and “identity-based preferences for hiring and admissions,” with one state’s legislation compelling public colleges to designate “agents” to oversee “prohibitions on DEI spending.” 62 Some states have also severed ties with the American Library Association (ALA) 63 amid allegations that the association is constrained by its perspectives on gender ideology and a left-leaning bias. 64

The contentious atmosphere surrounding library associations and the uptick in book challenges, particularly against titles by or about LGBTQIA+ people and people of color or relating to DEI content, 65 have implications for academic libraries and academic freedom in particular. The Association of American University Professors emphasizes the significance of “academic freedom, tenure, and shared governance” in providing a foundation for faculty members. 66 Tenure is seen as a crucial safeguard against the censorship and book banning observed in school libraries, ensuring impartiality and protecting academic libraries. 67

Unions may also play a role in protecting academic freedom. Higher education has witnessed an increase in union activities, strikes, and labor activism recently. 68 The pandemic has played a role in sparking these efforts, with one author suggesting it “exacerbated existing issues and brought up new ones,” 69 and 2023–24 ALA President Emily Drabinski has recognized the role of unions in protecting library workers from extremist groups, censorship, and unsafe conditions. 70 Library unions provide guarantees for fair wages, 71 improved working conditions, 72 the preservation of academic freedom, 73 and protection against unilateral decision-making, such as institutional reorganization and reimagining library workers’ research and roles. 74 The recent increase in union activities reflects a growing recognition of the power of collective bargaining to address the multifaceted challenges facing academic libraries in the current sociopolitical climate.

Post-pandemic Workplace and Hybrid Work Environments

The pandemic triggered widespread soul-searching, leading librarians to re-evaluate their priorities and seek workplaces aligned with their values. Not immune from “The Great Reshuffle,” many library staff have considered leaving their positions due to pandemic stress and lack of intrinsic motivators like work-life balance and growth. In a recent survey of academic librarians, nearly half said they were thinking of leaving their job “about half the time or more.” 75 When they remain, they want to have a role in defining the future. In one study, librarians “repeatedly emphasized the need for working conditions going forward to be governed through collegiality and conversation, rather than defaulting to the pre-pandemic organizational norms.” 76 Andrea Falcone and Lyda Fontes McCartin suggest that libraries must adapt to this shift by prioritizing talent retention through improved compensation, workload management, and flexible work options. 77 At the same time, perceived inequities within libraries and universities can fuel dissatisfaction and burnout. 78 Academic librarians may also risk burnout due to the emotional labor inherent in their work: “Meeting the societal and user expectations of being a librarian requires simultaneously regulating or performing one’s own emotions and interpreting, managing, and responding to the emotions of users.” 79 Effective prevention requires emotional literacy and supportive leadership that acknowledges the emotional toll and promotes decompression strategies, especially for librarians of color who often bear the brunt of this burden. 80

In this new workplace environment, many libraries are embracing flexible work arrangements as one strategy for addressing dissatisfaction and burnout. “Many workers now perceive pre-pandemic work modalities and workplace expectations as unnecessary, unrealistic, and undesirable, and employers have taken notice of the shift in employee attitudes.” 81 In fact, recent surveys have shown that three-quarters of academic libraries now offer hybrid work environments with flexible work arrangements. These same studies note that remote work offers benefits like greater productivity and reduced stress while onsite work fosters better onboarding, engagement, and team building. As a result, even when flexible work arrangements are available, usage by staff varies widely, suggesting a diverse workforce with a range of preferences. 82 To foster trust, knowledge, empathy, and community in such a hybrid environment, institutions must acknowledge its complexities and invest in intentional efforts to rebuild a strong academic workplace culture. 83 This new hybrid environment may also require redesigning staff spaces and setting new priorities for onsite work. The physical office is predicted to transform into a space for building social connections, fostering learning, and sparking innovation, which will necessitate intentional leadership that prioritizes face-to-face interaction and facilitates collaboration within a redesigned office environment. 84

Makerspaces and Tech Spaces

Designed for innovative and creative experimentation, makerspaces are defined as “low- and high-tech communal learning environments where people can create, build, and invent with digital and fabrication tools.” 85 While makerspaces started mostly in engineering departments, libraries quickly adopted the idea to become leaders in innovation through technology. In fact, the library is now the most common place for a makerspace to live on an academic campus. 86 Makerspaces found in academic libraries tend to “focus on digital fabrication, using computerized software-driven equipment,” with 3D printers and laser cutters being “the most commonly described equipment in Makerspaces in the research literature.” 87

As libraries continue to assess their user needs, support for these spaces is increasingly important. However, maintaining a thriving makerspace does not come without challenges, which include proper staffing and financial support for costly technology. 88 Despite these challenges, librarians are collaborating more through their makerspaces to amplify student engagement in the library. While not every endeavor has been successful, initiatives like the 3D Selfie Booth 89 and Game Jam 90 showcase library staff’s creativity and highlight positive interactions with makerspace technology, leading authors to express interest in deeper collaboration.

By analyzing student learning styles against major typologies of learning, the effectiveness of the makerspace on student engagement becomes clear. Students using these spaces learn through creation and interaction—with a community, experts, and a real-world environment. In makerspaces, “students are engaging in both content and culture knowledge and skills along with communication, management, ingenuity, and self-awareness.” 91 Students who visit makerspaces on a regular basis are more inclined to continue their use over time, indicating that ongoing engagement is crucial for students to perceive the usefulness of the space. 92

Makerspaces enable students to build self-efficacy, explore their entrepreneurial spirit, 93 and learn skills that will last them long past their academic career. Evolving alongside patron needs, academic libraries are integrating makerspaces into their future vision, offering access to new technologies, collaborative opportunities, and platforms for exploring personal interests. 94

Supporting Student Well-being Post-pandemic

The changes to learning environments and increased social isolation during the COVID-19 pandemic had a mental health impact on current and incoming college students including increased rates of depression and anxiety. 95 Academic libraries are adopting new strategies to address student mental health and well-being that go beyond scholarship to support for the whole student. 96 The “whole-university” approach is in use in some institutions with libraries serving as a vital part of an interconnected team of university offices working together to support student mental health. 97 These efforts align with trends focused on offering more personalized, socially centered service in libraries, 98 and they also relate to initiatives to support the evolving usage of library space. Students value the library as a social space and visit libraries as a way to overcome social isolation and find community. 99 For example, students in a recent focus group study noted using physical library spaces to socialize and de-stress 100 while librarians at Virginia Commonwealth University created a guide with audio and visual resources to help students re-create the library mood from home during the pandemic. 101 As another way to prioritize student wellness, libraries are adding leisure reading collections to support mindfulness, 102 and they are weaving mindfulness practices into information literacy instruction. 103 Academic librarians have also been looking inward, acknowledging the emotional work involved in supporting students and managing change through the pandemic. 104

The future holds many hurdles for academic librarians, such as the possible impacts of AI on higher education and the uncertainty of recurring operating and materials budgets. We are simultaneously thrilled by the new possibilities for hybrid teamwork and workspaces, the growing demand for diverse viewpoints, and the integration of innovative methods to provide access to our common resources. These challenges will require new policies and practices, but they will also enable us to innovate, adapt, and respond to complex and evolving phenomena in our common pursuit of supporting student achievement and enhancing teaching, learning, and academic research.

• Andrew M. Cox and Suvodeep Mazumdar, “Defining Artificial Intelligence for Librarians,” Journal of Librarianship and Information Science , published ahead of print (December 22, 2022), https://doi.org/10.1177/09610006221142029 , p. 2.
• Fiona Bradley, “Representation of Libraries in Artificial Intelligence Regulations and Implications for Ethics and Practice,” Journal of the Australian Library and Information Association 71, no. 3 (July 3, 2022): 189–200, https://doi.org/10.1080/24750158.2022.2101911 ; Mohammad Hosseini and Kristi Holmes, “The Evolution of Library Workplaces and Workflows via Generative AI,” College & Research Libraries 84, no. 6 (November 1, 2023): 836–42, https://doi.org/10.5860/crl.84.6.836 ; Aileen B. Houston and Edward M. Corrado, “Embracing ChatGPT: Implications of Emergent Language Models for Academia and Libraries,” Technical Services Quarterly 40, no. 2 (April 3, 2023): 76–91, https://doi.org/10.1080/07317131.2023.2187110 .
• Matthew Hutson, “Could AI Help You to Write Your Next Paper?,” Nature 611, no. 7934 (October 31, 2022): 192–93, https://doi.org/10.1038/d41586-022-03479-w .
• Lauren Coffey, “AI, the Next Chapter for College Librarians,” Inside Higher Ed , November 3, 2023, https://www.insidehighered.com/news/tech-innovation/libraries/2023/11/03/ai-marks-next-chapter-college-librarians .
• Duri Long and Brian Magerko, “What Is AI Literacy? Competencies and Design Considerations,” in Proceedings of the 2020 CHI Conference on Human Factors in Computing Systems (CHI ‘20: CHI Conference on Human Factors in Computing Systems, Honolulu HI USA: ACM, 2020), 1–16, https://doi.org/10.1145/3313831.3376727 , p. 2.
• Leo S. Lo, “The CLEAR Path: A Framework for Enhancing Information Literacy through Prompt Engineering,” The Journal of Academic Librarianship 49, no. 4 (July 2023): 102720, https://doi.org/10.1016/j.acalib.2023.102720 , p. 3.
• Amanda Wheatley and Sandy Hervieux, “Separating Artificial Intelligence from Science Fiction: Creating an Academic Library Workshop Series on AI Literacy,” in The Rise of AI: Implications and Applications of Artificial Intelligence in Academic Libraries , ACRL Publications in Librarianship 78 (Chicago: Association of College & Research Libraries, 2022), 61–70.
• Jane Southworth, Kati Migliaccio, Joe Glover, Ja’Net Glover, David Reed, Christopher McCarty, Joel Brendemuhl, Aaron Thomas, “Developing a Model for AI Across the Curriculum: Transforming the Higher Education Landscape via Innovation in AI Literacy,” Computers and Education: Artificial Intelligence 4 (2023): 100127, https://doi.org/10.1016/j.caeai.2023.100127 .
• Sandy Hervieux and Amanda Wheatley, eds., The Rise of AI: Implications and Applications of Artificial Intelligence in Academic Libraries , ACRL Publications in Librarianship 78 (Chicago: Association of College & Research Libraries, 2022).
• Bradley, “Representation of Libraries in Artificial Intelligence,” 196.
• Mary Ann Cullen and Elizabeth Dill, eds., Intersections of Open Educational Resources and Information Literacy (Chicago: Association of College & Research Libraries, 2022).
• Yolanda Bergstrom-Lynch, Mary Mahoney, and Joelle Thomas, “Empowering Students as OER Creators to Challenge Information Privilege,” in Intersections of Open Educational Resources and Information Literacy , ed. Mary Ann Cullen and Elizabeth Dill (Chicago: Association of College & Research Libraries, 2022), 237–64; Jolie A. L. Gareis, Erin I. Larson, Marcelo Ardón, John A. Berges, Jessica E. Brandt, Kaitlyn M. Busch, Victoria L. S. Chraibi, Elizabeth N. Gallagher, Kelly L. Hondula, Dustin W. Kincaid et al., “Using Wikipedia Assignments to Teach Critical Thinking and Scientific Writing in STEM Courses,” Frontiers in Education 7 (2022), https://doi.org/10.3389/feduc.2022.905777 ; Diana E. Park and Laurie M. Bridges, “Meet Students Where They Are: Centering Wikipedia in the Classroom,” Communications in Information Literacy 16, no. 1 (March 2022): 4–23, https://doi.org/10.15760/comminfolit.2022.16.1.2 ; Paul Anthony Thomas, Matthew Jones, and Spencer Mattingly, “Using Wikipedia to Teach Scholarly Peer Review: A Creative Approach to Open Pedagogy,” Journal of Information Literacy 15, no. 2 (August 6, 2021), https://doi.org/10.11645/15.2.2913 .
• Teresa Schultz and Elena S. Azadbakht, “Exploring Open Pedagogy in a Librarian-Taught Honors Course,” Communications in Information Literacy 17, no. 1 (June 1, 2023): 221–37, https://doi.org/10.15760/comminfolit.2023.17.1.2 ; Torrey Trust, Robert W Maloy, and Sharon Edwards, “College Student Engagement in OER Design Projects: Impacts on Attitudes, Motivation, and Learning,” Active Learning in Higher Education 24, no. 3 (November 1, 2023): 353–71, https://doi.org/10.1177/14697874221081454 ; Peter Daniel Wallis, Jennifer Mae White, and Stephen T. Kerr, “High Structure Renewable Assignments: A Design Study,” Open Praxis 14, no. 1 (January 2022): 39–53, https://doi.org/10.55982/openpraxis.14.1.146 ; Lindsey Gumb, “OER-Enabled Pedagogy Meets Info Lit: Empowering the Next Generation of Open Scholars,” in Intersections of Open Educational Resources and Information Literacy , ed. Mary Ann Cullen and Elizabeth Dill (Chicago: Association of College & Research Libraries, 2022), 49–68.
• Eric Werth and Katherine Williams, “What Motivates Students about Open Pedagogy? Motivational Regulation through the Lens of Self-Determination Theory,” International Review of Research in Open and Distributed Learning 22, no. 3 (August 1, 2021): 34–54, https://doi.org/10.19173/irrodl.v22i3.5373 , p. 48.
• Vanessa Arce and Rena D Grossman, “Students Speak: Animating Stories about the Value of Information,” in Intersections of Open Educational Resources and Information Literacy , ed. Mary Ann Cullen and Elizabeth Dill (Chicago: Association of College & Research Libraries, 2022), 199–211; Trust, Maloy, and Edwards, “College Student Engagement in OER Design Projects.”
• Lauren Hays and Melissa N. Mallon, “Using OER to Promote Inclusion in Higher Education Institutions,” Currents in Teaching & Learning 12, no. 2 (January 2021): 20–33; Wallis, White, and Kerr, “High Structure Renewable Assignments.”
• Eric Werth and Katherine Williams, “Learning to Be Open: Instructor Growth through Open Pedagogy,” Open Learning: The Journal of Open, Distance and e-Learning 38, no. 4 (October 2, 2023): 301–14, https://doi.org/10.1080/02680513.2021.1970520 .
• Erika Bailey and Marisa Petrich, “Grounded in Agency: Privacy Literacy for Student Empowerment,” Alki: The Washington Library Association Journal 38, no. 3 (2022): 31–37.
• Trust, Maloy, and Edwards, “College Student Engagement in OER Design Projects.”
• Kate McNally Carter and Ariana Santiago, “Exploring Sustainability in Library Support for Open Pedagogy Collaborations,” Communications in Information Literacy 17, no. 1 (June 1, 2023): 238–59, https://doi.org/10.15760/comminfolit.2023.17.1.3 , p.241.
• Bryan McGeary, Christopher Guder, and Ashwini Ganeshan, “Opening up Educational Practices through Faculty, Librarian, and Student Collaboration in OER Creation: Moving from Labour-Intensive to Supervisory Involvement,” Partnership: The Canadian Journal of Library & Information Practice & Research 16, no. 1 (January 2021): 1–27, https://doi.org/10.21083/partnership.v16i1.6149 .
• “Open Science Announcements from Federal Agencies,” Science.gov , 2023, https://open.science.gov/ .
• “Take Open Science 101,” NASA Transform to Open Science, 2023, https://nasa.github.io/Transform-to-Open-Science/take-os101/ .
• “Higher Education Leadership Initiative for Open Scholarship,” HELIOS Open, 2024, https://www.heliosopen.org .
• Ana Peršić and Tiffany Straza, “Open Science for All: Implementing the UNESCO Recommendation on Open Science for an Equitable and Just Transition to Open Science,” College & Research Libraries News 84, no. 10 (November 2, 2023), https://doi.org/10.5860/crln.84.10.377 , p. 381.
• “Strategy 2023–2027,” LIBER Europe, 2023, https://libereurope.eu/strategy/ .
• Maria Bonn, Josh Bolick, and Will Cross, eds., Scholarly Communication Librarianship and Open Knowledge (Chicago: Association of College & Research Libraries, 2023), p. 82.
• Joshua Quan, “Toward Reproducibility: Academic Libraries and Open Science,” in Data Science in the Library: Tools and Strategies for Supporting Data-Driven Research and Instruction , ed. Joel Herndon (London: Facet, 2022), 57–68.
• Birgit Schmidt et al., “Emerging Roles and Responsibilities of Libraries in Support of Reproducible Research,” LIBER Quarterly: The Journal of the Association of European Research Libraries 33, no. 1 (2023): 1–21, https://doi.org/10.53377/lq.14947 .
• Fred Willie Zametkin LaPolla et al., “Rigor and Reproducibility Instruction in Academic Medical Libraries,” Journal of the Medical Library Association: JMLA 110, no. 3 (2022): 281–93, https://doi.org/10.5195/jmla.2022.1443 ; Mark MacEachern and Sara Samuel, “Research Reproducibility Activities in Health Sciences Libraries,” Journal of eScience Librarianship 12, no. 2 (August 10, 2023): e650, https://doi.org/10.7191/jeslib.650 .
• Elisabeth Shook and Amy Vecchione, “Faculty Perceptions of Open Access Publishing: Investigating Faculty Publishing Habits to Evaluate Library Collection Alignment,” Journal of Librarianship and Scholarly Communication 10, no. 1 (December 16, 2022), https://doi.org/10.31274/jlsc.13216 .
• Tim Dolan and Duncan Claflin, “Assessing the Value of Subscription Journal Packages and Open Access Journal Articles in a Community College Context,” Journal of Librarianship and Scholarly Communication 11, no. 1 (July 28, 2023), https://doi.org/10.31274/jlsc.15673 .
• Björn Brembs et al., “Replacing Academic Journals,” Royal Society Open Science 10 (July 19, 2023): 230206, https://doi.org/10.1098/rsos.230206 ; Emily Cox, “Research Outputs as Testimony & the APC as Testimonial Injustice in the Global South,” College & Research Libraries 84, no. 4 (2023), https://doi.org/10.5860/crl.84.4.513 ; Katherine Elizabeth Skinner, Catherine Mitchell, and Kristen Ratan, “‘Bundle of Sticks’ and the Value of Interdependence: Building a Tools and Services Collective,” The Journal of Electronic Publishing 25, no. 1 (April 26, 2022), https://doi.org/10.3998/jep.1994 .
• Matthew Weirick Johnson and Salma Abumeeiz, “The Limits of Inclusion in Open Access: Accessible Access, Universal Design, and Open Educational Resources,” Journal of Librarianship and Scholarly Communication 11, no. 1 (August 8, 2023), https://doi.org/10.31274/jlsc.14399 .
• Lai Ma, Jane Buggle, and Marie O’Neill, “Open Access at a Crossroads: Library Publishing and Bibliodiversity,” Insights the UKSG Journal 36 (May 9, 2023): 10, 1–8, https://doi.org/10.1629/uksg.613 , p. 1.
• Bodo Stern, Zoé Ancion, Andreas Björke, Ashley Farley, Marte Qvenild, Katharina Rieck, Joroen Sondervan, Johan Rooryck, Robert Kiley, Maria Karatzia, and Nora Papp., “Towards Responsible Publishing: Seeking Input from the Research Community to a Draft Proposal from cOAlition S,” Zenodo, October 31, 2023, https://doi.org/10.5281/ZENODO.8398480 .
• Sarah Lippincott and Katherine Skinner, “FOREST Framework for Values-Driven Scholarly Communication” (Educopia Institute, 2022), https://www.nextgenlibpub.org/forest-framework ; Library Publishing Coalition, “An Ethical Framework for Library Publishing, Version 2.0,” May 2023, https://librarypublishing.org/resources/ethical-framework/ .
• Alex Mendonça, Andrea Chiarelli, Andy Byers, Andy Nobes, Chris Hartgerink, Clarissa França Dias Carneiro, Elle Malcolmson, Ivonne Lujano, Katie Foxall, Lucia Loffreda et al., “The Open Access Journals Toolkit (English),” Zenodo, June 27, 2023, https://doi.org/10.5281/zenodo.8017033 .
• Emily P. Jones, Nandita S. Mani, Rebecca B. Carlson, Carolyn G. Welker, Michelle Cawley, and Fei Yu, “Analysis of Anti-Racism, Equity, Inclusion and Social Justice Initiatives in Library and Information Science Literature,” Reference Services Review 50, no. 1 (March 2, 2022): 81–101, https://doi.org/10.1108/RSR-07-2021-0032 .
• Monica Figueroa and Kristan Shawgo, “‘You Can’t Read Your Way out of Racism’: Creating Anti-Racist Action out of Education in an Academic Library,” Reference Services Review 50, no. 1 (2022): 25–39, https://doi.org/10.1108/RSR-06-2021-0025 .
• Kara Bledsoe, Danielle Miriam Cooper, Roger C. Schonfeld, and Oya Y. Rieger, “Leading by Diversifying Collections: A Guide for Academic Library Leadership” (Ithaka S+R, November 9, 2022), https://doi.org/10.18665/sr.317833 .
• Bledsoe et al., “Leading by Diversifying Collections,” 11.
• Renae J. Watson, Khaleedah Thomas, and Kristine Nowak, “Adhocking It: Overcoming the Overwhelm to Start Creating: Equitable and Inclusive Collections Now,” in Practicing Social Justice in Libraries , ed. Alyssa Brissett and Diana Moronta (Routledge, 2023); Jessica M. Abbazio, Avery Boddie, and Ellen Ogihara, “Music Libraries and an Expanding Repertory: Suggested Strategies for Building Diverse Music Library Collections,” Notes (Music Library Association) 78, no. 3 (2022): 353–79, https://doi.org/10.1353/not.2022.0005 ; Veronica Wells, Michele Gibney, and Mickel Paris, “Student Learning and Engagement in a DEI Collection Audit: Applying the ACRL Framework for Information Literacy,” College & Research Libraries News 83, no. 8 (2022), https://doi.org/10.5860/crln.83.8.335 .
• Lori Jahnke, Kyle Tanaka, and Christopher Palazzolo, “Ideology, Policy, and Practice: Structural Barriers to Collections Diversity in Research and College Libraries,” College & Research Libraries 83, no. 2 (2022), https://doi.org/10.5860/crl.83.2.166 , p. 175.
• Bledsoe et al., “Leading by Diversifying Collections.”
• Heather M. Campbell, Christopher S. Dieckman, Nausicaa L. Rose, and Harriet E. Wintermute, “Improving Subject Headings for Iowa Indigenous Peoples,” Library Resources & Technical Services 66, no. 1 (March 11, 2022): 48, https://doi.org/10.5860/lrts.66n1.48 .
• Colleen S. Mullally, Jeremy Whitt, and Kayla Valdivieso, “Starting and Sustaining JEDI Acquisitions and Collections in Academic Libraries: Considerations and Strategies for Success,” in Perspectives on Justice, Equity, Diversity, and Inclusion in Libraries , ed. Nandita S. Mani, Michelle A. Cawley, and Emily P. Jones (IGI Global, 2023), 104–22, https://doi.org/10.4018/978-1-6684-7255-2.ch006 .
• John Buschman, “Libraries, Democracy, and Citizenship: Twenty Years after 9/11,” The Library Quarterly 93, no. 2 (April 1, 2023): 181–201, https://doi.org/10.1086/723850 .
• John Buschman, “Confusion Made Its Masterpiece: The Political Climate of Libraries (and Moving Forward),” The Library Quarterly 91, no. 2 (April 1, 2021): 129–36, https://doi.org/10.1086/713045 .
• John Buschman, “COVID-19 Doesn’t Change Anything: Neoliberalism, Generation-ism, Academic Library Buildings, and Lazy Rivers,” The Journal of Academic Librarianship 48, no. 4 (July 2022): 102558, https://doi.org/10.1016/j.acalib.2022.102558 .
• Adebowale Adetayo, Khadijat Ajayi, and Ranmilowo Komolafe, “Wars and Sanctions: Do Libraries Have a Role to Play?,” The Reference Librarian 63, no. 3 (July 3, 2022): 102–17, https://doi.org/10.1080/02763877.2022.2100559 .
• Joe Kohlburn, Jenny Bossaller, Hyerim Cho, Heather Moulaison-Sandy, and Denice Adkins, “Public Libraries and COVID-19: Perceptions and Politics in the United States,” The Library Quarterly 93, no. 1 (January 1, 2023): 7–25, https://doi.org/10.1086/722547 ; Catherine Lockmiller, “Decoding the Misinformation-Legislation Pipeline: An Analysis of Florida Medicaid and the Current State of Transgender Healthcare,” Journal of the Medical Library Association 111, no. 4 (October 2, 2023): 750–61, https://doi.org/10.5195/jmla.2023.1724 .
• Bharat Mehra and Joseph Winberry, “‘Politic Talks’ in Academic Libraries of the South to Address a Global Democracy Recession in the United States: An Exploratory Website Analysis,” in Libraries and the Global Retreat of Democracy: Confronting Polarization, Misinformation, and Suppression , ed. Natalie Greene Taylor et al., Advances in Librarianship 50 (Bingley, UK: Emerald Publishing Limited, 2021), 183–210, https://doi.org/10.1108/S0065-283020210000050008 .
• Zoë Abbie Teel, “Guardians of Freedom: Examining Privacy, Censorship, and Government Legislation in Collection Development,” The Serials Librarian , September 27, 2023, 1–6, https://doi.org/10.1080/0361526X.2023.2245862 .
• Michael Dudley and John Wright, “The Role of Multidimensional Library Neutrality in Advancing Social Justice: Adapting Theoretical Foundations from Political Science and Urban Planning,” Journal of Intellectual Freedom & Privacy 7, no. 3 (2023), https://doi.org/10.5860/jifp.v7i3.7840 .
• Steve Rosato, “Legally Speaking—Banning Bans, aka What’s Happening in Illinois,” Against the Grain (blog), September 30, 2022, https://www.charleston-hub.com/2023/11/legally-speaking-banning-bans-aka-whats-happening-in-illinois/ .
• Annis Lee Adams, “Anti-Racism Resources,” Public Services Quarterly 17, no. 2 (April 3, 2021): 104–11, https://doi.org/10.1080/15228959.2021.1898519 .
• Leta Hendricks and Gene Springs, “Amplifying Antiracism Resources through Intra-University Collaboration,” Collaborative Librarianship 13, no. 1 (April 15, 2022), https://digitalcommons.du.edu/collaborativelibrarianship/vol13/iss1/6 .
• Qing H. Stellwagen and Steven Bingo, “Supporting an Inclusive Campus Community: An Academic Library’s Co-Sponsorship of Asian American and Native Hawaiian/Pacific Islander Heritage Month Celebrations,” Journal of Library Administration 63, no. 3 (April 3, 2023): 358–70, https://doi.org/10.1080/01930826.2023.2177926 .
• Silvia Vong, “Not a Token! A Discussion on Racial Capitalism and Its Impact on Academic Librarians and Libraries,” Reference Services Review 50, no. 1 (March 2, 2022): 127–47, https://doi.org/10.1108/RSR-06-2021-0024 .
• Ann Glusker, Celia Emmelhainz, Natalia Estrada, and Bonita Dyess, “‘Viewed as Equals’: The Impacts of Library Organizational Cultures and Management on Library Staff Morale,” Journal of Library Administration 62, no. 2 (February 17, 2022): 153–89, https://doi.org/10.1080/01930826.2022.2026119 .
• Adrienne Lu, “Here’s What Florida’s Proposed Anti-DEI Regulations Would Ban,” The Chronicle of Higher Education , October 12, 2023, https://www.chronicle.com/article/heres-what-floridas-proposed-anti-dei-regulations-would-ban .
• Andrew Atterbury, “Florida Joins Conservative States Severing Ties with National Library Group,” POLITICO Pro, October 31, 2023, https://subscriber.politicopro.com/article/2023/10/florida-joins-conservative-states-severing-ties-with-national-library-organization-ala-00124516 ; Madalaine Elhabbal, “Montana State Library Commission Breaks Ties with American Library Association Over New President,” CatholicVote (blog), July 11, 2023, https://catholicvote.org/mt-state-library-commission-breaks-ties-with-ala/ .
• Shannon M Oltmann, Toni Samek, and Louise Cooke, “Intellectual Freedom: Waving and Wavering across Three National Contexts,” IFLA Journal 48, no. 3 (October 2022): 439–48, https://doi.org/10.1177/03400352221085294 .
• Raymond Garcia, “American Library Association Reports Record Number of Demands to Censor Library Books and Materials in 2022,” ALAnews, March 2023, https://www.ala.org/news/press-releases/2023/03/record-book-bans-2022 .
• Diana Castillo and Kelly McElroy, “Solidarity Is for Librarians: Lessons from Organizing,” In the Library with the Lead Pipe , August 24, 2022, https://www.inthelibrarywiththeleadpipe.org/2022/solidarity/ .
• David Baca and Lamoya Burks, “Tenure, Critical Race Theory + Academic Libraries,” Texas Library Journal 98, no. 2 (2022): 60–61.
• Ryan Quinn, “Report: Higher Ed Unions and Strikes Surged in 2022, 2023,” Inside Higher Ed , September 1, 2023, https://www.insidehighered.com/news/quick-takes/2023/09/01/higher-ed-unions-strikes-surged-2022-2023 .
• Colleen Flaherty, “When Librarians Unionize,” Inside Higher Ed , January 11, 2022, https://www.insidehighered.com/news/2022/01/12/northwestern-librarians-unionize-following-furloughs-cuts .
• Emily Drabinski, “Facing Threat of Far Right Violence, Library Workers Seek Safety in Unionization,” Truthout, December 16, 2022, https://truthout.org/articles/facing-threat-of-far-right-violence-library-workers-seek-safety-in-unionization/ .
• Liam Knox, “School Starts With a Strike at American University,” Inside Higher Ed , August 22, 2022, https://www.insidehighered.com/news/2022/08/23/american-u-staff-strike-higher-wages .
• Flaherty, “When Librarians Unionize.”
• Castillo and McElroy, “Solidarity Is for Librarians.”
• Josh Moody, “Texas A&M Weighs Sweeping Changes to Library,” Inside Higher Ed , May 15, 2022, https://www.insidehighered.com/news/2022/05/16/texas-am-considers-making-sweeping-changes-library .
• Amy F. Fyn, Amanda Foster Kaufman, and Christina Heady, “Academic Librarian Turnover and Leadership Amidst the Great Reshuffle,” in Forging the Future: ACRL 2023 Proceedings (Chicago: Association of College & Research Libraries, 2023), https://www.ala.org/acrl/conferences/acrl2023/papers , p. 2.
• Amy McLay Paterson, “‘Just The Way We’ve Always Done It’: Who Shapes The New Normal for Academic Libraries?,” Canadian Journal of Academic Librarianship / Revue Canadienne de Bibliothéconomie Universitaire 8 (2022): 1–25, https://doi.org/10.33137/cjal-rcbu.v8.38476 , p.15.
• Andrea Falcone and Lyda Fontes McCartin, “Strategies for Retaining and Sustaining the Academic Librarian Workforce in Times of Crises,” Journal of Library Administration 62, no. 4 (May 19, 2022): 557–63, https://doi.org/10.1080/01930826.2022.2057132 .
• Fyn, Kaufman, and Heady, “Academic Librarian Turnover and Leadership Amidst the Great Reshuffle.”
• Matthew Weirick Johnson and Sylvia Page, “What’s in a Workload? Affect, Burnout, and Complicating Capacity in Academic Librarians,” in Academic Librarian Burnout: Causes and Responses (Chicago: Association of College & Research Libraries, 2022), https://escholarship.org/uc/item/6w86w41v , p. 52.
• Johnson and Page, “What’s in a Workload?”
• Ashlea Green, “Academic Library Employees and Their Work Modality Options and Preferences,” The Journal of Academic Librarianship 49, no. 5 (September 1, 2023): 102764, https://doi.org/10.1016/j.acalib.2023.102764 , p. 1.
• Green, “Academic Library Employees and Their Work Modality Options and Preferences”; Daniel Pfeiffer, “New Data Reveal the Future of Remote Work in Libraries,” Choice 360 (blog), February 5, 2024, https://www.choice360.org/libtech-insight/new-data-reveal-the-future-for-remote-work-in-libraries/ .
• Joshua Kim, “Hybrid Work and the University Conversations We Need to Have,” Inside Higher Ed (blog), July 21, 2023, https://www.insidehighered.com/opinion/blogs/learning-innovation/2023/07/21/hybrid-work-and-university-conversations-we-need-have .
• Anne-Laure Fayard, John Weeks, and Mahwesh Khan, “Designing the Hybrid Office,” Harvard Business Review 99, no. 2 (March-April 2021): 114–23.
• Marijel (Maggie) Melo, Kimberly Hirsh, and Laura March, “Makerspaces in Libraries at U.S. Public Colleges and Universities: A Census,” portal: Libraries and the Academy 23, no. 1 (January 2023): 35–43, https://doi.org/10.1353/pla.2023.0007 , p.35.
• Melo, Hirsh, and March, “Makerspaces in Libraries at U.S. Public Colleges and Universities.”
• Emilia C. Bell, Stephanie Piper, and Carmel O’Sullivan, “Users’ Experiences in a Regional Academic Library Makerspace,” Journal of the Australian Library and Information Association 72, no. 2 (April 3, 2023): 135–49, https://doi.org/10.1080/24750158.2023.2202512 .
• Lawren Wilkins and John DeLooper, “If You Build It, Will They Come? Reflections on Creating a Community College Library Makerspace,” Public Services Quarterly 17, no. 4 (October 2, 2021): 276–85, https://doi.org/10.1080/15228959.2021.1887049 .
• Alex Watson, “To Thine Own 3D Selfie Be True: Outreach for an Academic Library Makerspace with a 3D Selfie Booth,” Information Technology and Libraries 42, no. 4 (December 18, 2023), https://doi.org/10.5860/ital.v42i4.15107 .
• Amber Sewell, “Game Jams for Academic Libraries: Lessons Learned from a Collaboration with the Makerspace,” College & Research Libraries News 85, no. 1 (2024), https://doi.org/10.5860/crln.85.1.23 .
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• Bala Haruna and K. Kiran, “Intrinsic Motivation as a Determinant of Perceived Usefulness of Library Makerspace: The Influence of Learning Dimensions,” Malaysian Journal of Library and Information Science 28, no. 1 (May 11, 2023): 15–34, https://doi.org/10.22452/mjlis.vol28no1.2 .
• Sewell, “Game Jams for Academic Libraries.”
• Sarita S. Rajan, Mohamed Esmail, and Mohamed Musthafa K., “Repositioning Academic Libraries as a Hub of Technology Enhanced Learning Space: Innovations and Challenges,” Library Philosophy and Practice , January 10, 2022, https://digitalcommons.unl.edu/libphilprac/6694 .
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• Liz Brewster and Andrew M. Cox, “Taking a ‘Whole-University’ Approach to Student Mental Health: The Contribution of Academic Libraries,” Higher Education Research & Development 42, no. 1 (January 2, 2023): 33–47, https://doi.org/10.1080/07294360.2022.2043249 .
• Sheila Corrall, “The Social Mission of Academic Libraries in Higher Education,” in The Social Future of Academic Libraries: New Perspectives on Communities, Networks, and Engagement , ed. Paul Bracke, Sheila Corrall, and Tim Schlak (London: Facet, 2022), 109–48, https://doi.org/10.29085/9781783304738.007 .
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• Susan Carter, Cecily Andersen, Michaell Turner, and Lorraine Gaunt, “‘What about Us?’ Wellbeing of Higher Education Librarians,” The Journal of Academic Librarianship 49, no. 1 (January 1, 2023): 102619, https://doi.org/10.1016/j.acalib.2022.102619 ; Maryellen Nash, Barbara Lewis, Jessica Szempruch, Stephanie Jacobs, and Susan Silver, “Together, Apart: Communication Dynamics among Academic Librarians during the COVID-19 Pandemic,” College & Research Libraries 83, no. 6 (November 2022): 946–65, https://doi.org/10.5860/crl.83.6.946 .

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Introduction, case presentation, conflict of interest statement, ethical approval.

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Rare dorsal ossified meningioma in an elderly female: a case report and comprehensive review of literature

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Mahmoud M Taha, Mohamed M Arnaout, Ahmad Alkheder, Khaled Abdel Aziz Jr, Mazen M Taha, Khaled Alsayed Abualkhair, Rare dorsal ossified meningioma in an elderly female: a case report and comprehensive review of literature, Journal of Surgical Case Reports , Volume 2024, Issue 6, June 2024, rjae389, https://doi.org/10.1093/jscr/rjae389

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Meningiomas, typically benign neoplasms originating in the central nervous system, display a predilection for female patients. Although they predominantly manifest within the cranial vault, ~25% of primary spinal neoplasms are attributed to these tumors. The occurrence of ossification in spinal meningiomas is an uncommon phenomenon, with scant documentation in medical literature. In this report, we detail the clinical journey of an octogenarian female patient afflicted with an ossified spinal meningioma, which was associated with left lower extremity weakness and reduced sensation. Diagnostic imaging, specifically magnetic resonance imaging, identified a mass exerting pressure on the spinal cord, necessitating its surgical removal. Subsequent histopathological examinations corroborated the initial diagnosis. Postoperative magnetic resonance imaging scans confirmed the absence of residual tumor tissue and ruled out recurrence. A comprehensive review of existing literature yielded 47 analogous cases, with a majority involving elderly female patients and the thoracic region of the spine being the most common site. The standard therapeutic approach is surgical intervention, which is often complicated by the tumor’s tenacious adherence to surrounding structures and the potential for ensuing operative complications. This case highlights the exceptional nature of ossified spinal meningiomas and emphasizes the critical need for meticulous surgical management.

Meningiomas stand as the most prevalent primary benign tumors within the central nervous system. They typically manifest as benign growths and exhibit a prevalence twice as high in females compared to males. Factors contributing to their occurrence encompass ethnicity, familial predisposition, and prior exposure to radiation [ 1 , 2 ]. Although meningiomas predominantly arise intracranially, they can also manifest within the spinal cord. Spinal meningiomas constitute ~25% of primary spinal tumors [ 2 ]. Ossification within spinal meningiomas is an infrequent occurrence, with only 46 reported cases preceding the one detailed in this case report. Herein, we present a case of ossified spinal meningioma in an 80-year-old female.

An otherwise healthy 80-year-old female patient presented with left lower extremity weakness following frequent falls ~1 month ago. Upon examination, motor power in the left lower limb was graded as III, accompanied by hypoesthesia. Without any other accompanying symptoms, magnetic resonance imaging (MRI) of the spine revealed a lesion within the vertebral canal causing compression of the spinal cord at the D10–D11 level ( Fig. 1 ). T1-weighted images (T1WI) displayed hypointense calcified regions

Preoperative MRI, sagittal view, T2WI, shows tumor mass at levels D10–D11.

within the lesion, while T2-weighted images (T2WI) exhibited variable signal intensity, predominantly hypointense, in addition to surrounding tissue changes indicative of compression and edema ( Fig. 2 ). Subsequently, the patient underwent surgical excision of the lesion, including laminectomy of D10–D11. A sharp dissection of the mass from the dura was performed during the surgery ( Fig. 3 ). Two months after surgery, the patient underwent a short course of physiotherapy for several weeks, and now they can ambulate without support. The postoperative period was uneventful. Histopathological analysis revealed the presence of classical psammoma bodies, characterized by calcium deposits or punctate calcifications within the tumor mass, consistent with a diagnosis of classic meningioma ossified ( Fig. 4 ). A follow-up MRI performed after 3 months demonstrated complete excision with no evidence of tumor recurrence ( Fig. 5 ).

Preoperative MRI, axial view, T2WI, shows of hypointensely calcified regions within the tumor.

Intraoperative images showing the tumor after dissection and after complete excision.

Histopathology shows the classical psammoma bodies, which are composed of calcium deposits or punctate calcifications within the tumor mass.

Postoperative MRI, sagittal view, T2WI, showing complete resection of the tumor.

Spinal meningioma exhibits various classifications, comprising up to 15 histologic subtypes, with the psammomatous, meningothelial, and transitional types being the most prevalent. Ossification of spinal meningioma is a relatively uncommon occurrence, reported in 5%–10% of cases [ 3 ].

Based on our comprehensive review of the existing literature, our investigation identified 47 cases of ossified spinal meningioma, which includes the case detailed in this report ( Table 1 ). Our analysis revealed a predominance of occurrences in females (42 cases) compared to males (5 cases). The average age of patients afflicted with ossified spinal meningioma was 64.6 years, with ages ranging from 15 to 90 years. The thoracic spine was the most common site of manifestation, accounting for 89.3% (42 cases) of cases, followed by the cervical spine (4 cases, 9%) and lumbar spine (1 case, 1.7%). Treatment modalities primarily involved gross total resection in 42 cases, subtotal resection in 3 cases, and insufficiently described resection extents in 2 cases. Postoperatively, the majority of patients demonstrated gradual improvement, with 25 cases showing no recurrence, although recurrence status was not reported for the remainder of the cases ( Table 1 ).

Summary of all documented cases

GTR, gross total resection; STR, subtotal resection.

Our analysis indicates that while ossified spinal meningioma exhibits a higher prevalence among females, no substantiated correlation between this condition and sex hormones has been identified [ 40 ].

While CT scans offer superior diagnostic capabilities for spinal tumors compared to MRI, differentiation between calcification and ossification necessitates histopathologic examination [ 33 ]. The mechanism underlying the ossification of spinal meningiomas remains unclear, though several theories have been proposed. Kubota et al. [ 37 ] suggested that ossification occurs as an advanced stage of psammomatous calcification of meningioma as part of the neoplastic process. However, this theory does not account for all cases of ossified spinal meningioma documented in the literature, as ossification can occur without preceding psammomatous calcification [ 3 ]. Another theory proposed by Uchida et al. [ 17 ] implicates genetic predispositions, such as osteoblast transcription factors SOX9 and Runx-2, although this may not be applicable to all patients. Genetic analysis is not routinely indicated for such tumor cases.

Surgical intervention remains the cornerstone of treatment for spinal meningiomas, whether calcified or completely ossified. Computed tomography (CT) plays a crucial role in preoperative planning and identifying the ossified component of the tumor. Dense calcifications serve as a guide for intraoperative tumor localization using fluoroscopy or O-arm imaging. Surgical resection of ossified spinal meningioma can be challenging due to tumor adherence to adjacent neural elements and dural invasion. This adherence may result in an unclear dissection plane, potentially impacting postoperative outcomes and hindering gross total tumor resection, with subsequent risks of spinal cord trauma or injury [ 13 , 24 ]. Nonetheless, reported literature indicates minimal postoperative complications thus far.

Ossified meningiomas represent benign yet exceedingly rare spinal tumors. Across the documented literature, clinical presentations vary widely but exhibit common patterns. There is a notable predominance of female patients, with lesions commonly observed in the thoracic spine. Surgical excision remains the cornerstone of treatment, necessitating careful consideration to mitigate potential complications.

None declared.

Ethics clearance was not necessary since the University waives ethics approval for publication of case reports involving no patients’ images, and the case report is not containing any personal information. The ethical approval is obligatory for research that involve human or animal experiments.

Written informed consent was obtained from the patient for publication of this case report and accompanying images.

Wiemels J , Wrensch M , Claus EB . Epidemiology and etiology of meningioma . J Neurooncol   2010 ; 99 : 307 – 14 . https://doi.org/10.1007/s11060-010-0386-3 .

Google Scholar

Buerki RA , Horbinski CM , Kruser T , et al.    An overview of meningiomas . Future Oncol   2018 ; 14 : 2161 – 77 . https://doi.org/10.2217/fon-2018-0006 .

Adogwa O , Fessler RG : Intradural Extramedullary Spinal Tumors. In: Brain and Spine Surgery in the Elderly . edn. Berhouma M , Krolak-Salmon P . Cham : Springer International Publishing ; 2017 : 289 – 304 . https://doi.org/10.1007/978-3-319-40232-1_17

Google Preview

Murakami T , Tanishima S , Takeda C , et al.    Ossified metaplastic spinal meningioma without Psammomatous calcification: a case report . Yonago Acta Med   2019 ; 62 : 232 – 5 . https://doi.org/10.33160/yam.2019.06.008 .

Rogers L . A spinal meningioma containing bone . Br J Surg   1928 ; 15 : 675 – 7 . https://doi.org/10.1002/bjs.1800156015 .

Freidberg SR . Removal of an ossified ventral thoracic meningioma case report . J Neurosurg   1972 ; 37 : 728 – 30 . https://doi.org/10.3171/jns.1972.37.6.0728 .

Kandel E , Sungurov E , Morgunov V . Cerebral and two spinal meningiomas removed from the same patient: case report . Neurosurgery   1989 ; 25 : 447 – 50 . https://doi.org/10.1227/00006123-198909000-00021 .

Niijima K , Huang YP , Malis LI , et al.    Ossified spinal meningioma en plaque . Spine (Phila Pa 1976)   1993 ; 18 : 2340 – 3 . https://doi.org/10.1097/00007632-199311000-00036 .

Kitagawa M , Nakamura T , Aida T , et al.    Clinicopathologic analysis of ossification in spinal meningioma . Noshuyo Byori   1994 ; 11 : 115 – 9 .

Nakayama N , Isu T , Asaoka K , et al.    Two cases of ossified spinal meningioma . No Shinkei Geka   1996 ; 24 : 351 – 5 .

Huang TY , Kochi M , Kuratsu J , et al.    Intraspinal osteogenic meningioma: report of a case . J Formos Med Assoc   1999 ; 98 : 218 – 21 .

Saito T , Arizono T , Maeda T , et al.    A novel technique for surgical resection of spinal meningioma . Spine (Phila Pa 1976)   2001 ; 26 : 1805 – 8 . https://doi.org/10.1097/00007632-200108150-00017 .

Naderi S , Yilmaz M , Canda T , et al.    Ossified thoracic spinal meningioma in childhood: a case report and review of the literature . Clin Neurol Neurosurg   2001 ; 103 : 247 – 9 . https://doi.org/10.1016/S0303-8467(01)00157-3 .

Liu CL , Lai PL , Jung SM , et al.    Thoracic ossified meningioma and osteoporotic burst fracture: treatment with combined vertebroplasty and laminectomy without instrumentation: case report . J Neurosurg Spine   2006 ; 4 : 256 – 9 . https://doi.org/10.3171/spi.2006.4.3.256 .

Hirabayashi H , Takahashi J , Kato H , et al.    Surgical resection without dural reconstruction of a lumbar meningioma in an elderly woman . Eur Spine J   2009 ; 18 : 232 – 5 .

Tahir M , Usmani N , Ahmad FU , et al.    Spinal meningioma containing bone: a case report and review of literature . BMJ Case Rep   2009 ; 2009 : bcr1120081186 . https://doi.org/10.1136/bcr.11.2008.1186 .

Uchida K , Nakajima H , Yayama T , et al.    Immunohistochemical findings of multiple ossified en plaque meningiomas in the thoracic spine . J Clin Neurosci   2009 ; 16 : 1660 – 2 . https://doi.org/10.1016/j.jocn.2009.03.013 .

Licci S , Limiti MR , Callovini GM , et al.    Ossified spinal tumour in a 58-year-old woman with increasing paraparesis . Neuropathology   2010 ; 30 : 194 – 6 . https://doi.org/10.1111/j.1440-1789.2009.01076.x .

Chotai SP , Mrak RE , Mutgi SA , et al.    Ossification in an extra-intradural spinal meningioma-pathologic and surgical vistas . Spine J   2013 ; 13 : e21 – 6 . https://doi.org/10.1016/j.spinee.2013.06.102 .

Ju CI , Hida K , Yamauchi T , et al.    Totally ossified metaplastic spinal meningioma . J Korean Neurosurg Soc   2013 ; 54 : 257 – 60 . https://doi.org/10.3340/jkns.2013.54.3.257 .

Taneoka A , Hayashi T , Matsuo T , et al.    Ossified thoracic spinal meningioma with hematopoiesis: a case report and review of the literature . Case Rep Clin Med   2013 ; 2 : 24 – 8 . https://doi.org/10.4236/crcm.2013.21007 .

Yamane K , Tanaka M , Sugimoto Y , et al.    Spinal metaplastic meningioma with osseous differentiation in the ventral thoracic spinal canal . Acta Med Okayoma   2014 ; 68 : 313 – 6 .

Chan T , Lau VW , Chau TK , et al.    Ossified thoracic spinal meningioma with lamellar bone formation presented with paraparesis . J Orthop Trauma Rehab   2014 ; 18 : 106 – 9 .

Alafaci C , Grasso G , Granata F , et al.    Ossified spinal meningiomas: clinical and surgical features . Clin Neurol Neurosurg   2016 ; 142 : 93 – 7 . https://doi.org/10.1016/j.clineuro.2016.01.026 .

Demir MK , Yapicier O , Toktas ZO , et al.    Ossified-calcified intradural and extradural thoracic spinal meningioma with neural foraminal extension . Spine J   2016 ; 16 : e35 – 7 . https://doi.org/10.1016/j.spinee.2015.08.053 .

Cochran EJ , Schlauderaff A , Rand SD , et al.    Spinal osteoblastic meningioma with hematopoiesis: radiologic-pathologic correlation and review of the literature . Ann Diagn Pathol   2016 ; 24 : 30 – 4 . https://doi.org/10.1016/j.anndiagpath.2016.07.002 .

Xia T , Tian JW . Entirely ossified subdural meningioma in thoracic vertebral canal . Spine J   2016 ; 16 : e11 . https://doi.org/10.1016/j.spinee.2015.09.005 .

Kim J , Min W , Kim J , et al.    Two case reports of calcified spinal meningioma and a literature review . J Korean Soc Spine Surg   2016 ; 23 : 227 – 33 . https://doi.org/10.4184/jkss.2016.23.4.227 .

Prakash A , Mishra S , Tyagi R , et al.    Thoracic psammomatous spinal meningioma with osseous metaplasia: a very rare case report . Asian J Neurosurg   2017 ; 12 : 270 – 2 . https://doi.org/10.4103/1793-5482.150222 .

Taha MM , Alawamry A , Abdel-Aziz HR . Ossified spinal meningioma: a case report and a review of the literature . Surg J (N Y)   2019 ; 05 : e137 – 41 . https://doi.org/10.1055/s-0039-1697634 .

Wang C , Chen Y , Zhang L , et al.    Thoracic psammomatous meningioma with osseous metaplasia: a controversial diagnosis of a case report and literature review . World J Surg Oncol   2019 ; 17 : 150 . https://doi.org/10.1186/s12957-019-1694-5 .

Xu F , Tian Z , Qu Z , et al.    Completely ossified thoracic intradural meningioma in an elderly patient: a case report and literature review . Medicine   2020 ; 99 : e20814 . https://doi.org/10.1097/MD.0000000000020814 .

Buchanan D , Martirosyan NL , Yang W , et al.    Thoracic meningioma with ossification: case report . Surg Neurol Int   2021 ; 12 : 505 . https://doi.org/10.25259/SNI_643_2021 .

Wong YP , Tan GC , Mukari SAM , et al.    Heterotopic ossification in psammomatous spinal meningioma: a diagnostic controversy . Int J Clin Exp Pathol   2021 ; 14 : 627 – 32 .

Thakur J , Ulrich CT , Schär RT , et al.    The surgical challenge of ossified ventrolateral spinal meningiomas: tricks and pearls for managing large ossified meningiomas of the thoracic spine . J Neurosurg Spine   2021 ; 35 : 516 – 26 . https://doi.org/10.3171/2020.12.SPINE201526 .

Dong C , Liu Y , Zhu Y , et al.    Multiple ossified spinal meningiomas in the thoracic spine: a case report and literature review . Front Surg   2022 ; 9 : 965815 . https://doi.org/10.3389/fsurg.2022.965815 .

Kubota T , Yamashima T , Hasegawa M , et al.    Formation of psammoma bodies in meningocytic whorls. Ultrastructural study and analysis of calcified material . Acta Neuropathol   1986 ; 70 : 262 – 8 . https://doi.org/10.1007/BF00686081 .

Sakamoto K , Tsutsumi S , Nonaka S , et al.    Ossified extradural en-plaque meningioma of the cervical spine . J Clin Neurosci   2018 ; 50 : 124 – 6 . https://doi.org/10.1016/j.jocn.2018.01.058 .

Xu WB , Sun NK , Cai DX , et al.    An unusual presentation of ossified spinal meningioma: case report and literature review . Front Oncol   2023 ; 13 : 1259508 . https://doi.org/10.3389/fonc.2023.1259508 .

Marosi C , Hassler M , Roessler K , et al.    Meningioma . Crit Rev Oncol Hematol   2008 ; 67 : 153 – 71 . https://doi.org/10.1016/j.critrevonc.2008.01.010 .

• magnetic resonance imaging
• osteogenesis
• spinal neoplasms
• surgical procedures, operative
• spinal cord
• older adult
• spinal meningioma
• lower extremity paresis
• histopathology tests

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