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• How to Write a Literature Review | Guide, Examples, & Templates

How to Write a Literature Review | Guide, Examples, & Templates

Published on January 2, 2023 by Shona McCombes . Revised on September 11, 2023.

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 that you can later apply to your paper, thesis, or dissertation topic .

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 summarize sources—it analyzes, synthesizes , and critically evaluates to give a clear picture of the state of knowledge on the subject.

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Table of contents

What is the purpose of 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, free lecture slides, other interesting articles, frequently asked questions, introduction.

• Quick Run-through
• Step 1 & 2

When you write a thesis , dissertation , or research paper , you will likely 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 its scholarly context
• Develop a theoretical framework and methodology for your research
• Position your work in relation to other researchers and theorists
• Show how your research addresses a gap or contributes to a debate
• Evaluate the current state of research and demonstrate your knowledge of the scholarly debates around your topic.

Writing literature reviews is a particularly important skill if you want to apply for graduate school or pursue a career in research. We’ve written a step-by-step guide that you can follow below.

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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 problem and questions .

Make a list of keywords

Start by creating a list of keywords related to your research question. 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 as 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 useful 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 also use boolean operators to help narrow down your search.

Make sure to 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.

You likely won’t be able to read absolutely everything that has been written on your topic, so it will be necessary to evaluate which sources are most relevant to your research question.

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?
• 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 use our template to summarize and evaluate sources you’re thinking about using. Click on either button below to download.

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 is important to keep track of your sources with citations to avoid plagiarism . It can be helpful to make an annotated bibliography , where you compile full citation 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.

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To begin organizing your literature review’s argument and structure, be sure you 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 organizing the body of a literature review. 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 summarizing sources in order.

Try to analyze 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 organize 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.

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, you can follow these tips:

• Summarize and synthesize: give an overview of the main points of each source and combine them into a coherent whole
• Analyze and interpret: don’t just paraphrase other researchers — add your own interpretations where possible, 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 transition words and topic sentences to draw connections, comparisons and contrasts

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

When you’ve finished writing and revising your literature review, don’t forget to proofread thoroughly before submitting. Not a language expert? Check out Scribbr’s professional proofreading services !

This article has been adapted into lecture slides that you can use to teach your students about writing a literature review.

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If you want to know more about the research process , methodology , research bias , or statistics , make sure to check out some of our other articles with explanations and examples.

• Sampling methods
• Simple random sampling
• Stratified sampling
• Cluster sampling
• Likert scales
• Reproducibility

 Statistics

• Null hypothesis
• Statistical power
• Probability distribution
• Effect size
• Poisson distribution

Research bias

• Optimism bias
• Cognitive bias
• Implicit bias
• Hawthorne effect
• Anchoring bias
• Explicit bias

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 thesis, dissertation , or research paper , in order to situate your work in relation to existing knowledge.

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

• To familiarize 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 thesis or dissertation . After the introduction , it grounds your research in a scholarly field and leads directly to your theoretical framework or methodology .

A literature review is a survey of credible sources on a topic, often used in dissertations , theses, and research papers . Literature reviews give an overview of knowledge on a subject, helping you identify relevant theories and methods, as well as gaps in existing research. Literature reviews are set up similarly to other  academic texts , with an introduction , a main body, and a conclusion .

An  annotated bibliography is a list of  source references that has a short description (called an annotation ) for each of the sources. It is often assigned as part of the research process for a  paper .  

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How to Write an Effective Problem Statement for Your Research Paper

• 4 minute read

Table of Contents

The problem statement usually appears at the beginning of an article, making it one of the first things readers encounter. An excellent problem statement not only explains the relevance and importance of the research but also helps readers quickly determine if the article aligns with their interests by clearly defining the topic. Therefore, the problem statement plays a unique role in the widespread dissemination of the paper and enhancing the researcher’s academic influence.  

In this article, we will focus on writing ideas, structure, and practical examples of the problem statement, helping researchers easily write an excellent problem statement.  

Basic Writing Strategies for the Problem Statement  

The problem statement aims to highlight the pressing issue the research intends to address. It should be concise and to the point. Researchers can follow a two-step approach: first, think about the content of the problem statement, and then organize the writing framework.  

Before writing, clarify the following points¹ :  

• What is the reader’s level of understanding of the research topic?  
• How can the significance of the research be effectively conveyed to the reader?  

After addressing these two questions, you can organize the content according to the following structure:  

• Clarify what you aim to achieve with your research.  
• Explore why the problem exists and explain how solving it helps reach the goal.  
• Outline the potential impact of the research, such as possible outcomes, challenges, and benefits.  
• Recommend a plan for your experiment that follows the rules of science.  
• Explain the potential consequences if the problem is not resolved (if applicable).  

Three Important Parts of the Problem Statement  

The content and length of the problem statement can vary depending on the type of research. Although there’s no fixed format, it’s helpful to include these three key parts:  

  Research Background:  

Explain clearly what problem your research focuses on. Describe how things would be better if this problem didn’t exist. Also, talk about what other researchers have tried to do about this problem and what still needs to be figured out.  

  Research Significance:  

Clarify the impact of the problem on the research field and society, and analyze the cause of the problem. Explain who will benefit from solving the problem, thus demonstrating the relevance of the research and its contribution to the existing research system.²  To illustrate the relevance, consider aspects such as the geographical location or process where the problem occurs, the time period during which it exists, and the severity of the problem.  

Solution:  

Describe the research objective and the expected solution or results.  

Understanding the Writing Method Through Examples  

To further explore the writing method of the problem statement, let’s look at the following case.  

Research Topic: 

The benefits of vitamin D supplementation on the immune system.  

Problem Statement: 

• Review existing research on the role of vitamin D in the immune system, emphasizing the potential impacts of vitamin D deficiency on the human body.  
• List the obstacles encountered when trying to increase vitamin D levels in the body through supplements, and briefly mention the physiological or molecular mechanisms behind these obstacles.  
• Clarify feasible ways to overcome these obstacles, such as new methods to promote the absorption of vitamin D in the intestine. Then, focus on the benefits of these methods, such as helping postmenopausal women with breast cancer improve their blood vitamin D levels.   

Points to Note: 

When crafting your problem statement, focus on essential details and avoid unnecessary information. Additionally, absolute terms such as “must” should be avoided.  

( The examples in this article are used only to illustrate writing points, and the academic views contained therein are not for reference. )  

By mastering these techniques and methods, you can enhance the clarity and impact of their problem statements. This not only makes the articles more engaging for reviewers and readers but also increases the likelihood of broader dissemination.  

For efficient and professional assistance, consider reaching out to Elsevier Language Services. Our team of expert editors, who are native English speakers across various disciplines, can help refine every aspect of your article, including the problem statement. Our goal is to ensure your research achieves efficient publication and has wide-reaching impact, supporting your academic journey in the long term.  

Type in wordcount for Plus Total: USD EUR JPY Follow this link if your manuscript is longer than 9,000 words. Upload

References:  

• SURF Workshop Resources: Problem Statements – Purdue OWL® – Purdue University. (n.d.). https://owl.purdue.edu/owl/subject_specific_writing/writing_in_the_purdue_surf_program/surf_workshop_resources_problem_statements/index.html
• Problem Statement | A practical guide to delivering results. (n.d.). Copyright (C)2024 a Practical Guide to Delivering Results. All Rights Reserved. https://deliveringresults.leeds.ac.uk/delivering-results-lifecycle/problem-statement/

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How to Write a Statement of the Problem for Your Research Proposal

Defining your research problem is essential when conducting an experiment. In this article, you will learn how to write a statement of the problem for your research proposal. Learn about the characteristics of a good statement of the problem and examples of research questions.

Updated on May 17, 2022

You are a great researcher. You are full of ideas and questions as to where to go next with your work. You would not be in this position if you were not good at coming up with interesting questions within your area.

One problem, though, is knowing where to spend your time, energy, and money. Which ideas, questions, and problems are worthwhile?

You need to be able to define a good research problem. A research problem addresses an existing gap in knowledge in your field and leads to further investigations by you and other researchers. Inspiring others with your research problem will lead to citations, enhancing your and your institution's impact.

In order to write a clear and useful problem statement, you need to describe a question and its consequences.

One key way to assess the ‘usefulness' of your research ideas is to learn how to express them as clear problems.

In this article, we will talk about how to write a statement of the problem for your next research proposal. This is important not just for assessing the ‘usefulness' of research ideas, but also for formulating a grant application or proposal. We'll talk about how to explain your research ideas to others in the form of a problem statement in your proposal.

What is a statement of the problem in research?

All research projects should start with a clear problem statement. A problem statement is a formulation of an issue which is usually a ‘gap' within your area. A research gap is an unanswered question, an issue, controversy, or untested hypothesis that has not yet been addressed.

The trick with research problems is working out whether they are actually worth investing the time, energy, and money to figure out. This comes with experience, or you could just read on!

Since a clear problem statement is going to form the basis of your next research project, the question is: How can I write one?

How is this done? The first step is to become familiar with the basic elements of a problem statement in effective research.

Characteristics of a problem statement

A research problem statement has two key attributes:

• The problem must be challenging and original, but also potentially achievable by your team.
• The problem must not be incremental. In other words, don't try to address a small change or advance on an existing study that leads to no new scientific insight. This could be damaging to your and your team's reputation, and will likely not lead to a meaningful publication.

Developing a ‘good' research problem statement, therefore, involves systematic planning and setting time-based, realistic objectives. Your problem has to be achievable.

You'll also need to apply feasible research methods based on an approach that best suits the research question. Your methods have to make sense. They must be usable. In other words, you must be able to acquire statistically sufficient and relevant data that is reproducible.

Finally, the problem you define means you'll need to train team members in this particular research area and methods.

Writing a statement of the problem

Stating a research problem is done by defining it within the general area of your research. This depends on your previous work and experience. It may be an area you want to move into or a topic related to what you have already worked on as a researcher. Examples could include a question in astrophysics within physics, robotics within engineering, nutrition within medicine, or marine biology within ocean and Earth science.

Once you've determined your overall area (and you'll know this already of course), it's time to drill down, decide, and define a research problem within that field.

First , your statement should identify a problem that needs to be addressed within your selected sub-area.

This will almost certainly require literature work, but the idea may arise from:

• Discussions you've had with colleagues;
• Discussions at a conference;
• A paper you've read.

Second , your problem statement should be a “good research problem.” This will require further investigation and reading as you consider “what has been done?” and “what needs to be done?”

Third , search for more information, perhaps by:

• Locating relevant books, papers and other materials;
• Evaluating the quality and authority of the information collected;
• Maintaining a regular literature review throughout the project;
• Making regular notes on background material;
• Deciding how this literature search will be carried out within the research group;
• Deciding how information gained will be disseminated to the group (e.g., via each researcher carrying out a regular literature review in their sub-area and information disseminated at group meetings or via email at regular intervals).

This process may well change or modify how your research problem is stated or formulated.

Once your research problem has been identified, research questions within the problem need to be specified.

How long should your statement of the problem be?

Not too long. One page is more than enough for a clear and effective problem statement.

Research questions within your problem

The first stage of writing your research problem statement involves formulating your questions in a meaningful way. In the context of important questions, we are looking for things that many readers across different disciplines find to be interesting. But at the same time, set your question within your field.

Thus, once a research problem has been established, several questions can be written down. These questions should specify exactly what needs to be determined to address the problem.

These questions should also be specific enough that they can be answered using appropriate available research methods - or methods that could be made available to the research group (e.g. by buying or borrowing equipment).

These questions should require complex in-depth investigation, analysis, and argument. They should not be simple enough that they can be answered easily with well-established facts or yes/no answers.

All research questions should be focused, specific, appropriately complex, and relevant to the overall aims of the project.

Examples of questions and next steps

• How do government regulations prevent companies from polluting water systems?
• What factors have influenced population growth in the fastest growing countries?
• How can a bespoke thermal desorption unit be designed and built for use in detection of trace particulate matter in a polluted environment (e.g., a busy city street)?
• What methods and procedures can be used to understand, and hence control, fundamental chemical processes that occur in flames?
• How can measurement protocols used in mass spectrometry in a university research laboratory be developed and standardized to enable direct comparison with related measurements in a government laboratory?

Once the problem and questions have been identified, the resources required to carry out the research will need to be assessed. This will involve:

• Identifying the equipment needed. Find out what is available and what needs to be purchased.
• Assessing which consumables (e.g., chemicals) are needed for the project, and determining if they can be obtained on a regular basis (i.e., in the right quantities at the appropriate times).
• Identifying the software, data-analyses and other computer support needed. Assess what needs to be purchased.
• Assessing what laboratory and office space is needed. And if more is required, discuss this with the relevant laboratory manager.
• Identifying what support for travel is needed for the group, as well as what resources are required for the group to attend relevant conferences and training of group personnel.

Final thoughts

Defining and writing a clear statement of a problem as the basis of a project is the first - and most important - step in any research. The tips and ideas in this article will help you clearly identify the purpose of the research you are developing.

A clear research problem statement will likely form the skeleton of the Introduction of your final article. If you are able to clearly direct your reader (the most important person in the publishing process) to an important and interesting question, they will likely stay engaged, and use and cite your article in the future.

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How to Write a Statement of a Problem in Research with Steps

Published by Grace Graffin at August 11th, 2021 , Revised On October 3, 2023

Research is a systematic investigation to find new techniques, products or processes to solve problems. Apart from being systematic, research is empirical in nature: it’s based on observations and measurement of those observations.

It’s what comes before the development. Impacts and policies that are born in society are borne out of the research.

The most important step to perform any research is to identify a problem that needs to be solved. Therefore, it is necessary to define a research problem before starting the actual research process. Once a research problem has been identified, the next step is to write a problem statement.

Philosopher Kaoru Ishikawa said: “You will have a problem half-solved by defining it correctly on the first day.”

This quote perfectly reflects the importance of a problem statement in research. Before writing a problem statement, it is essential to pinpoint a specific problem, the difficulties you can expect to face as you try to solve it and the research gaps you aim to fill with your research.

The last part—how your research aims to fill a gap in the existing literature—will act as a springboard to the solution(s) that policy makers, for instance, might eventually take to solve that problem.

Filling a gap, therefore, is very important towards solving an existing problem.

What is a Problem Statement?

A problem statement is a clear and concise description of an issue or challenge that needs to be addressed. It typically outlines the existing gap between the current state (what currently is) and the desired state (what should be). Crafting a well-defined problem statement is critical for problem-solving, research, or project planning, as it serves as a guidepost and sets the direction for the subsequent steps.

Research Problem and Research Method – A Cyclical Process

The type of research strategy used in research determines whether you will be analysing theoretical problems to add value to existing knowledge, discussing practical issues to become an agent of change for an organisation or industry or looking at both aspects in relation to any given problem.

However, the kind of problem you aim to tackle with your research, to begin with, will also help you narrow down which research design , method or strategy to opt for.

This is therefore a cyclical process. Your research aim guides your research design can help you focus on a specific kind of research gap/problem.

However, generally, your research will focus on one or the other.

Here is all you need to know about how to write a statement of the problem in research, also called problem statement by some research writers .

Why do you Need a Statement of the Problem, to Begin with?

You need a statement of the problem to transform a generalised problem into a well-defined, brief, targeted statement to perform research in the decision-making process. The problem statement helps the researcher to identify the purpose of the ongoing research.

The problem statement in the dissertation is the pillar of the introduction chapter through which the reader can understand the research questions and scope of the project. If you do not define the problem statement properly, the results might become unmanageable.

Writing Problem Statement for a Business or Organisation

In the business world, problem statements provide the basis for the enhancement and refinement of projects. Without identifying and understanding the problem, it will be hard to find and effectively implement solutions.

A stand-alone document that solely provides an in-depth and detailed problem statement is usually the answer for organisations and businesses when it becomes imperative to find the solution to a problem.

Writing Problem Statement for Academic Research

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Problem Statement – How to Write it

Ask yourself the following questions before writing the problem statement:

• What is wrong in the research area/subarea XYZ?
• Where did it happen?
• When did it happen?
• To what extent (how much)?
• I know that because…(evidence)

‘What’ always defines the defect of the problem at hand and explains why it matters? ‘Where’ defines the geological location of the problem. ‘When’ defines the history and the pattern of the problem, the goal of the stated problem and the scope of research.

‘How much’ defines the trend of the problem as to how many objects are facing the same defect and to what extent. The last part, ‘I know this because…’, will help the researcher identify the standard(s) that he must meet.

Step 1: Understanding the Problem

The problem statement should provide a clear and concise background to the research problem you are investigating. Before starting your research , review the literature about the specific problem and find a gap to fill with your own research.

Practical Research Problem Statement

If you are doing experimental research , you can identify problems by talking to people working in a relevant field, studying research reports, and reviewing previous research. Here are some examples of practical research problems:

• A problem that hinders the efficiency of a company
• An institutional process that needs interventions
• An area of concern in your field/sub-field of interest
• Members of a society facing a specific difficulty

The problem statement should focus on the details related to the problem, such as:

• When and where was the problem observed?
• Who is/are affected by it?
• What research has been conducted and what practical steps have been taken to resolve the problem?

Example of Practical Research Problem Statement

The production of a company is low for the months of July and August every year. Initial research has been conducted by the company, which revealed poor production in July and August is due to the unavailability of local raw material.

The company has made some effective attempts at engaging the local suppliers to ensure an uninterrupted supply of the raw material, but these efforts are yet to have any significant impact on the production levels.

Theoretical Research Problem Statement

According to USC Libraries, “A theoretical framework consists of concepts and, together with their definitions and reference to relevant scholarly literature, existing theory that is used for your particular study…theoretical framework must demonstrate an understanding of theories and concepts…relevant to the topic of your research paper and that relate to the broader areas of knowledge being considered.”

The theoretical research indirectly contributes to the change by identifying the problem, expanding knowledge and improving understanding. The researcher can find a specific problem by brainstorming the topic and reviewing already published theories and research.

When writing a problem statement based on a theoretical research problem , it is important to recognise the historical, geographical, social and scientific background. Here are the elements of the theoretical problem statement framework that you should consider:

• What are the facts about the problem?
• Does the problem relate to a certain geographical area or time period?
• How is the problem discussed and explained in the existing literature?

Example of Theoretical Research Problem Statement

The production of a company is low for July and August every year. Initial research has been conducted by the company, which revealed poor production in July and August is due to the unavailability of local raw material. The company has made some effective attempts to engage the local suppliers to ensure an uninterrupted raw material supply. Still, these efforts are yet to have any significant impact on the production levels.

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Step 2 – Show why it’s Important and Relevant

By discussing the importance of the problem under investigation, you are demonstrating the relevance of your research. However, this does not mean that you will end up discovering something unimaginable or extraordinary.

The objective here is to clearly state how and why your research problem is relevant in your chosen area of study and why it requires further research.

As indicated previously, practical research deals with a problem affecting society, social group, firm or organisation on a broader scale. To elaborate on why it is important to solve this problem and why your research is significant, you could consider the following questions:

• What will be the consequences if the problem remains unsolved?
• Who do these consequences have the most implications for?
• What is the wider relevance of the problem being investigated?

Low production in July and August negatively affects the company’s marketing capital, thereby becoming an area of deep concern for the directors and stakeholders. The marketing budget cut in July and August is hindering its ability to promote its products uninterruptedly.

Addressing this problem will have practical benefits for the company and help establish the reasons for disruption in raw material supply.

The relevance of all theoretical issues may not be too obvious, even though most theoretical problems do have practical implications. Here are some questions for you to ponder to establish the importance of your research problem:

• Will your research help to advance understanding of the topic under investigation?
• Are there any benefits of you resolving the problem for other researchers who wish to explore this topic further in the future?
• What are the direct or indirect implications (s) of the problem you are trying to solving?

The new forms of employment such as freelance, contract-based work and zero-hour work arrangements are recognised as either a manipulative last option or a flexible active choice. It is necessary to conduct comprehensive qualitative research to uncover why fresh graduates take up these types of employment in the gig economy. There is a need to advance more vigorous concepts relating to instability and flexibility in modern forms of employment from employees’ perspectives, which will also help shape future policies.

Also see: How to Write the Abstract for Dissertation

Step 3 – Declaring the Problem

Before you jump on to state your research’s problem statements, it’s important to devote a sentence or two to let your readers know the precise, narrowed-down research problem you will be discussing about.

For language clarity purposes, here are some strong opening statements to achieve this step:

• Recently, there has been growing interest in …
• The possibility of…has generated wide interest in …
• The development of…is a classic problem in…
• The development of…has led to the hope that …
• The…has become a favourite topic for analysis …
• Knowledge of…has great importance for …
• The study of…has become an important aspect of …
• A central issue in…is…
• The…has been extensively studied in recent years.
• Many investigators have recently turned to …
• The relationship between…has been investigated by many researchers.
• Many recent studies have found out…

Step 4 – Establishing Aim and Objectives

The last step in writing a problem statement is to provide a framework for solving the problem. This will help you, the researcher, stay focused on your research aims and not stray; it will also help you readers keep in mind the reason as to why you conducted this study, to begin with.

A good problem statement does not provide the exact solution to any problem. Rather, it focuses more on how to effectively understand or tackle a problem by establishing the possible causes.

The aim of a research study is its end goal or overall purpose. Following are some examples of how you can craft your research aim statements:

• This research study aims to investigate…
• This paper is aimed at exploring…
• This research aims to identify…

On the other hand, objectives are the smaller steps that a researcher must take to address the aim of the research. Once you have laid out the research problem your research will deal with, it’s important to next mention the how behind that. Objectives are mostly imperative statements, often beginning with transitive verbs like ‘to analyse,’ ‘to investigate,’ etc.

Some more examples are:

• Statistical analysis will be conducted to determine…
• Both quantitative and qualitative research methods will be employed to probe…
• Face-to-face interviews will be carried out with the participants to establish…

Practical Research Aim and Objectives

This project aims to identify the causes of disturbed supply of raw material in the region, which resulted in low production for the company in July and August. This will be achieved by conducting interviews and surveys with the suppliers to understand why the supply is unpredictable in those two months and what can be done to ensure orderliness. Practical experiments will also be conducted to observe the effectiveness of proposed solutions.

Theoretical Research Aim and Objectives

This study aims to understand and unearth the experiences of fresh graduates in the modern economy. The sample population will participate in this study through qualitative research methods, which are expected to provide a deeper insight into the perceptions and motives of these fresh graduates working as freelancers and contract-based employees. The data collected from this exercise and the existing literature on the topic will be analysed in statistical analysis software.

TIP: Search the common themes of the problem statement in your field of research before writing a problem statement.

Also see: Argumentative Essay Writing Service

Problem Statement versus Significance of the Study

Even though both may sound similar, the statement of the problem and the significance of your study are going to be different. The latter does develop upon and from the former, though.

The problem statement tells your readers what’s wrong, whereas the significance of the study will tell them how your research contributed to that problem. You can’t have a significance of a study without mentioning the problem statement first.

Furthermore, signifying your study implies mentioning 4 key points related to it:

• How your study will further develop the theory behind the existing problem
• Practical solutions that might be implemented to solve the problem (especially in field research work)
• Whether your study or research will pave way for innovative methods to solve the existing problem.
• How your study can help in policy making and implementation, impact studies, etc.

Problem statement in research is the description of an existing issue that needs to be addressed. The problem statement is a focal point of any research and a bridge between the  literature review  and the  research methodology .

Problem statement often has three elements; the problem itself, the method of solving the problem, and the purpose. There are five aspects of every problem: What, Where, When, to what extent, and what defects you know about the topic. Here is an  example of a problem statement in a research proposal  for your better understanding.

If you wish to know more about how to start your research process, then you might want to take a look at the “ Starting the Research Process ” section on our website, which has several articles relating to a  research problem , problem statement, research aim and objectives, and  research proposal .

ResearchProspect is a UK-registered business that offers academic support and assistance to students across the globe. Our writers can help you with individual chapters of your dissertation or the full dissertation writing service , no matter how urgent or complex your requirements might be.

Frequently Asked Questions

Is it necessary to write a problem statement.

Yes, the most important step to perform any research is to identify a problem that needs to be solved. Therefore, it is necessary to define a research problem before starting the actual research process .

How is a problem statement different from a problem statement written for an organisation?

In the business world, problem statements provide the basis for the enhancement and refinement of projects. Whereas, in academic research, A problem statement helps researchers understand and realise organised the significance of a research problem .

What is a practical research problem?

Doing experimental research can identify problems by talking to people working in a relevant field, studying research reports, and reviewing previous research. 

What is a theoretical research problem?

A theoretical research problem is when the researcher finds a specific problem by brainstorming and reviewing already published theories and research.

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How to Write a Problem Statement in Research with Examples

What is a Research Problem Statement?

A research problem statement is a concise statement describing the problem or issue addressed by the research study. The research problem should be composed in a way that both experts and non-experts in the field can understand.

Every research paper describes the investigation of a problem: by adding knowledge to the existing literature, revisiting known observations, or finding concrete solutions. What contribution your publication makes to your field or the scientific community at large depends on whether your research is “basic” (i.e., mainly interested in providing further knowledge that researchers can later apply to specific problems) or “applied” (i.e., developing new techniques, processes, and products).

In any case, a research proposal or research paper must clearly identify and describe the “problem” that is being investigated, so that the reader understands where the research comes from, why the study is relevant, if the applied methods are appropriate, and if the presented results are valid and answer the stated questions. This is known as the “statement of the problem.”

Table of Contents:

• What is a Research Problem?

How to Write a Problem Statement in a Research Paper

• Statement of the Problem Example 
• Where Does the Problem Statement Go in Your Paper?

Consider Using Professional Editing Services

Understanding how to write a research problem.

Your research problem defines the gap in existing knowledge you want to address (e.g., global warming causes), an issue with a certain process (e.g., voter registration) or practices (e.g., patient treatment) that is known and well documented and needs a solution, or some surprising phenomena or earlier findings that point to the need for further investigation. Your approach can be theoretical or practical, and the specific type of problem you choose to address depends on the type of research you want to do. 

In any case, your paper should not repeat what other studies have already said. It also should not ask a question that is too broad in scope to be answered within your study, nor should it be so vague that your reader cannot grasp your motivation or focus. To avoid such problems, you need to clearly define your research question, put it into context, and emphasize its significance for your field of research, the wider research community, or even the general public.

When including your statement of the research problem, several key factors must be considered in order to make a statement that is clear, concise, relevant, and convincing to readers. Think about the following elements not as “steps” to writing your problem statement, but as necessary conditions on which your statement can be firmly grounded and stand out.

Provide context for your study

Putting your research problem in context means providing the reader with the background information they need to understand why you want to study or solve this particular problem and why it is relevant. If there have been earlier attempts at solving the problem or solutions that are available but seem imperfect and need improvement, include that information here.

If you are doing applied research, this part of the problem statement (or “research statement”) should tell the reader where a certain problem arises and who is affected by it. In basic or theoretical research, you make a review of relevant literature on the topic that forms the basis for the current work and tells the reader where your study fits in and what gap in existing knowledge you are addressing.

Establish the relevance of this research

The problem statement also needs to clearly state why the current research matters, or why future work matters if you are writing a research proposal. Ask yourself (and tell your readers) what will happen if the problem continues and who will feel the consequences the most. If the solution you search for or propose in your study has wider relevance outside the context of the subjects you have studied, then this also needs to be included here. In basic research, the advancement of knowledge does not always have clear practical consequences—but you should clearly explain to the reader how the insights your study offers fit into the bigger picture, and what potential future research they could inspire.

Define specific aims and Objectives

Now that the reader knows the context of your research and why it matters, briefly introduce the design and the methods you used or are planning to use. While describing these, you should also formulate your precise aims more clearly, and thereby bring every element in your paper together so that the reader can judge for themselves if they (a) understand the rationale behind your study and (b) are convinced by your approach.

This last part could maybe be considered the actual “statement of the problem” of your study, but you need to prepare the reader by providing all the necessary details before you state it explicitly. If the background literature you cite is too broad and the problem you introduced earlier seems a bit vague, then the reader will have trouble understanding how you came up with the specific experiments you suddenly describe here. Make sure your readers can follow the logical structure of your presentation and that no important details are left out.   

Research Problem Statement Example

The following is a sample statement of the problem for a practical research study on the challenges of online learning. Note that your statement might be much longer (especially the context section where you need to explain the background of the study) and that you will need to provide sources for all the claims you make and the earlier literature you cite. You will also not include the headers “context”, “relevance” and “aims and objectives” but simply present these parts as different paragraphs. But if your problem statement follows this structure, you should have no problem convincing the reader of the significance of your work.

Providing context: Since the beginning of the Covid pandemic, most educational institutions around the world have transitioned to a fully online study model, at least during peak times of infections and social distancing measures. This transition has not been easy and even two years into the pandemic, problems with online teaching and studying persist (reference needed) . While the increasing gap between those with access to technology and equipment and those without access has been determined to be one of the main challenges (reference needed) , others claim that online learning offers more opportunities for many students by breaking down barriers of location and distance (reference needed) .  

Establishing relevance: Since teachers and students cannot wait for circumstances to go back to normal, the measures that schools and universities have implemented during the last two years, their advantages and disadvantages, and the impact of those measures on students’ progress, satisfaction, and well-being need to be understood so that improvements can be made and demographics that have been left behind can receive the support they need as soon as possible.

Defining aims and objectives: To identify what changes in the learning environment were considered the most challenging and how those changes relate to a variety of student outcome measures, we conducted surveys and interviews among teachers and students at ten institutions of higher education in four different major cities, two in the US (New York and Chicago), one in South Korea (Seoul), and one in the UK (London). Responses were analyzed with a focus on different student demographics and how they might have been affected differently by the current situation.

Where Does the Problem Statement Go in Your Paper? 

If you write a statement of the problem for a research proposal, then you could include it as a separate section at the very beginning of the main text (unless you are given a specific different structure or different headings, however, then you will have to adapt to that). If your problem statement is part of a research paper manuscript for publication in an academic journal, then it more or less constitutes your introduction section , with the context/background being the literature review that you need to provide here.

If you write the introduction section after the other parts of your paper, then make sure that the specific research question and approach you describe here are in line with the information provided in the research paper abstract , and that all questions you raise here are answered at the end of the discussion section —as always, consistency is key. Knowing where to put the research question can depend on several important contextual factors.

Receive instant editing with Wordvice AI, our automated AI Grammar Checker . Then hand over your manuscript or paper to a professional English editing service for paper editing , thesis editing , or other academic editing services .

And if you need advice on how to write the other parts of your research paper , on how to make a research paper outline if you are struggling with putting everything you did together, or on how to come up with a good research question in case you are not even sure where to start, then head over to the Wordvice academic resources website where we have a lot more articles and videos for you.

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How to Write a Statement of the Problem in Research

Table of Contents

The problem statement is a foundation of academic research writing , providing a precise representation of an existing gap or issue in a particular field of study.

Crafting a sharp and focused problem statement lays the groundwork for your research project.

• It highlights the research's significance .
• Emphasizes its potential to influence the broader academic community.
• Represents the initial step for you to make a meaningful contribution to your discipline.

Therefore, in this article, we will discuss what is a statement of the problem in research and how to craft a compelling research problem statement.

What is a research problem statement?

A research problem statement is a concise, clear, and specific articulation of a gap in current knowledge that your research aims to bridge. It not only sets forth the scope and direction of your research but also establishes its relevance and significance.

Your problem statement in your research paper aims to:

• Define the gap : Clearly identify and articulate a specific gap or issue in the existing knowledge.
• Provide direction : Serve as a roadmap, guiding the course of your research and ensuring you remain focused.
• Establish relevance : Highlight the importance and significance of the problem in the context of your field or the broader world.
• Guide inquiry :  Formulate the research questions or hypotheses you'll explore.
• Communicate intent : Succinctly convey the core purpose of your research to stakeholders, peers, and any audience.
• Set boundaries : Clearly define the scope of your research to ensure it's focused and achievable.

When should you write a problem statement in research?

Initiate your research by crafting a clear problem statement. This should be done before any data collection or analysis, serving as a foundational anchor that clearly identifies the specific issue you aim to address.

By establishing this early on, you shape the direction of your research, ensuring it targets a genuine knowledge gap.

Furthermore, an effective and a concise statement of the problem in research attracts collaborators, funders, and supporters, resonating with its clarity and purpose. Remember, as your research unfolds, the statement might evolve, reflecting new insights and staying pertinent.

But how do you distinguish between a well-crafted problem statement and one that falls short?

Effective vs. ineffective research problem statements

Imagine a scenario where medical researchers aim to tackle a new strain of virus. Their effective problem statement wouldn't merely state the existence of the virus. Instead, it would delve into the specifics — the regions most affected, the demographics most vulnerable, and the current limitations in medical interventions.

Whereas an ineffective research problem statement is vague, overly broad, or ambiguous, failing to provide a clear direction for the research. It may not be rooted in existing literature, might lack clarity on its significance, or could be framed in a way that makes the research objectives unachievable or irrelevant.

To understand it better, let's consider the topic of “Remote work and employee productivity.”

Effective problem statement

“Over the past decade, there has been a 70% increase in organizations adopting remote work policies. While some studies suggest remote work enhances employee productivity, others indicate potential declines due to distractions at home.

However, there’s a lack of comprehensive research examining the specific factors in a remote environment that influence productivity. This study aims to identify and analyze these factors, providing organizations with actionable insights to optimize remote work policies.”

Why is this statement of a problem in research effective?

• Specificity : The statement provides a clear percentage to highlight the rise in remote work.
• Context : It acknowledges existing research and the conflicting findings.
• Clear gap identification : It points out the lack of comprehensive research on specific factors affecting productivity in remote work.
• Purpose : The statement concludes with a clear aim for the research.

Ineffective problem statement

"People are working from home a lot now, especially since there are so many internet tools. Some say it's good; others say it's not that great. This research will just look into the whole work-from-home thing and see what's up."

Why is this statement of a problem in research ineffective?

• Informal language : Phrases like "what's up" and "the whole work-from-home thing" are not suitable for academic writing.
• Vagueness : The statement doesn't provide any specific data or context about the rise of remote work.
• Lack of clear focus : It's unclear what aspect of remote work the research will address.
• Ambiguous purpose : The statement doesn't specify the research's objectives or expected outcomes.

After gaining an understanding of what an effective research problem statement looks like, let's dive deeper into how to write one.

How to write a problem statement in research?

Drafting your research problem statement at the onset of your research journey ensures that your research remains anchored. That means by defining and articulating the main issue or challenge you intend to address at the very beginning of your research process; you provide a clear focus and direction for the entire study.

Here's a detailed guide to how you can write an effective statement of the problem in research.

Identify the research area : Before addressing a specific problem, you need to know the broader domain or field of your study. This helps in contextualizing your research and ensuring it aligns with existing academic disciplines.

Example: If you're curious about the effects of digital technology on human behavior, your broader research area might be Digital Sociology or Media Studies.

Conduct preliminary literature review : Familiarize yourself with existing research related to your topic. This will help you understand what's already known and, more importantly, identify gaps or unresolved questions in the existing knowledge. This step also ensures you're advancing upon existing work rather than replicating it.

Example: Upon reviewing literature on digital technology and behavior, you find many studies on social media's impact on youth but fewer on its effects on the elderly.

Read how to conduct an effective literature review .

Define the specific problem : After thoroughly reviewing the literature, pinpoint a particular issue that your research will address. Ensure that this chosen issue is not only of substantial importance in its field but also realistically approachable given your resources and expertise. To define it precisely, you might consider:

• Highlighting discrepancies or contradictions in existing literature.
• Emphasizing the real-world implications of this gap.
• Assessing the feasibility of exploring this issue within your means and timeframe.

Example: You decide to investigate how digital technology, especially social media, affects the mental well-being of the elderly, given the limited research in this area.

Articulate clearly and concisely : Your problem statement should be straightforward and devoid of jargon. It needs to convey the essence of your research issue in a manner that's understandable to both experts and non-experts.

Example: " The impact of social media on the mental well-being of elderly individuals remains underexplored, despite the growing adoption of digital technology in this age group. "

Highlight the significance : Explain why your chosen research problem matters. This could be due to its real-world implications, its potential to fill a knowledge gap or its relevance to current events or trends.

Example: As the elderly population grows and becomes more digitally connected, understanding the psychological effects of social media on this demographic could inform digital literacy programs and mental health interventions.

Ensure feasibility : Your research problem should be something you can realistically study, given your resources, timeframe, and expertise. It's essential to ensure that you can gather data, conduct experiments, or access necessary materials or participants.

Example: You plan to survey elderly individuals in local community centers about their social media usage and perceived mental well-being, ensuring you have the means to reach this demographic.

Seek feedback : Discuss your preliminary problem statement with peers, mentors, or experts in the field. They can provide insights, point out potential pitfalls, or suggest refinements.

Example: After discussing with a gerontologist, you decide to also consider the role of digital training in moderating the effects of social media on the elderly.

Refine and Revise : Based on feedback and further reflection, revise and improve your problem statement. This iterative process ensures clarity, relevance, and precision.

Example: Your refined statement reads: Despite the increasing digital connectivity of the elderly, the effects of social media on their mental well-being, especially in the context of digital training, remain underexplored.

By following these detailed steps, you can craft a research problem statement that is both compelling and academically rigorous.

Having explored the details of crafting a research problem statement, it's crucial to distinguish it from another fundamental element in academic research: the thesis statement.

Difference between a thesis statement and a problem statement

While both terms are central to research, a thesis statement presents your primary claim or argument, whereas a problem statement describes the specific issue your research aims to address.

Think of the thesis statement as the conclusion you're driving towards, while the problem statement identifies a specific gap in current knowledge.

For instance, a problem statement might highlight the rising mental health issues among teenagers, while the thesis statement could propose that increased screen time is a significant contributor.

Refer to the comparison table between what is a thesis and a problem statement in the research below:

Common mistakes to avoid in writing statement of the problem in research

Mistakes in the research problem statement can lead to a domino effect, causing misalignment in research objectives, wasted resources, and even inconclusive or irrelevant results.

Recognizing and avoiding these pitfalls not only strengthens the foundation of your research but also ensures that your efforts concede impactful insights.

Here's a detailed exploration of frequent subjective, qualitative, quantitative and measurable mistakes and how you can sidestep them.

Being too broad or too narrow

A problem statement that's too broad can lack focus, making it challenging to derive specific research questions or objectives. Conversely, a statement that's too narrow might limit the scope of your research or make it too trivial.

Example of mistake: "Studying the effects of diet on health" is too broad, while "Studying the effects of eating green apples at 3 pm on heart health" is overly narrow.

You can refine the scope based on preliminary research. The correct way to write this problem statement will be "Studying the effects of a high-fiber diet on heart health in adults over 50." This statement is neither too broad nor too narrow, and it provides a clear direction for the research.

Using unnecessary jargon or technical language

While academic writing often involves academic terms, overloading your problem statement with jargon can alienate readers and obscure the actual problem.

Example of Mistake: "Examining the diurnal variations in macronutrient ingestion vis-à-vis metabolic homeostasis."

To ensure it’s not complicated, you can simplify and clarify. "Examining how daily changes in nutrient intake affect metabolic balance" conveys the same idea more accessible.

Not emphasizing the "Why" of the problem

It's not enough to state a problem; you must also convey its significance. Why does this problem matter? What are the implications of not addressing it?

Example of Mistake: "Many students are not engaging with online learning platforms."

You can proceed with the approach of highlighting the significance here. "Many students are not engaging with online learning platforms, leading to decreased academic performance and widening educational disparities."

Circular reasoning and lack of relevance

Your problem statement should be grounded in existing research or observed phenomena. Avoid statements that assume what they set out to prove or lack a clear basis in current knowledge.

Example of Mistake: "We need to study X because not enough research has been done on X."

Instead, try grounding your statement based on already-known facts. "While several studies have explored Y, the specific impact of X remains unclear, necessitating further research."

Being overly ambitious

While it's commendable to aim high, your problem statement should reflect a challenge that's achievable within your means, timeframe, and resources.

Example of Mistake: "This research will solve world hunger."

Here, you need to be realistic and focused. "This research aims to develop sustainable agricultural techniques to increase crop yields in arid regions."

By being mindful of these common mistakes, you can craft a problem statement that is clear, relevant and sets a solid foundation for your research.

Over-reliance on outdated data

Using data that is no longer relevant can mislead the direction of your research. It's essential to ensure that the statistics or findings you reference are current and pertinent to the present scenario.

Example of Mistake: "According to a 1995 study, only 5% of the population uses the internet for daily tasks."

You always cross-check the dates and relevance of the data you're using. For a contemporary study on internet usage, you'd want to reference more recent statistics.

Not specifying the sample size or demographic

A problem statement should be clear about the population or sample size being studied, especially when making generalizations or claims.

Example of Mistake: "People prefer online shopping to in-store shopping."

Here, you would benefit from specifying the demographic or sample size when presenting data to avoid overgeneralization. " In a survey of 1,000 urban residents aged 18-35, 70% expressed a preference for online shopping over in-store shopping. "

Ignoring conflicting data

Cherry-picking data that supports your hypothesis while ignoring conflicting data can lead to a biased problem statement.

Example of Mistake: "Research shows that all students benefit from online learning."

You’ve to ensure a balanced view by considering all relevant data, even if it contradicts your hypothesis. " While many studies highlight the advantages of online learning for students, some research points to challenges such as decreased motivation and lack of face-to-face interaction. "

Making unsubstantiated predictions

Projecting future trends without solid data can weaken the credibility of your problem statement.

Example of Mistake: "The demand for electric cars will increase by 500% in the next year."

Base your predictions on current trends and reliable data sources, avoiding hyperbolic or unsupported claims. " With the current growth rate and recent advancements in battery technology, there's potential for a significant rise in the demand for electric cars. "

Wrapping Up

A well-crafted problem statement ensures that your research is focused, relevant, and contributes meaningfully to the broader academic community.

However, the consequences of an incorrect or poorly constructed problem statement can be severe. It can lead to misdirected research efforts, wasted resources, compromised credibility, and even ethical concerns. Such pitfalls underscore the importance of dedicating time and effort to craft a precise and impactful problem statement.

So, as you start your research journey , remember that a well-defined problem statement is not just a starting point; it guides your entire research journey, ensuring clarity, relevance, and meaningful contributions to your field.

Frequently Asked Questions

A problem statement is a clear, concise and specific articulation of a gap in current knowledge that your research aims to bridge.

The Problem Statement should highlight existing gaps in current knowledge and also the significance of the research. It should also include the research question and purpose of the research.

Clear articulation of the problem and establishing relevance; Working thesis (methods to solve the problem); Purpose and scope of study — are the 3 parts of the problem statement.

While the statement of the problem articulates and delineates a particular research problem, Objectives designates the aims, purpose and strategies to address the particular problem.

Here’s an example — “The study aims to identify and analyze the specific factors that impact employee productivity, providing organizations with actionable insights to optimize remote work policies.”

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How To Write a Solid Problem Statement

Introduction

The basic research process, what is an example of a problem statement, how does writing problem statements help, types of problem statements, how do i write a problem statement.

A well-defined problem statement is one of the key elements of a rigorously designed research project. It is based on your literature review and informs your study design in a manner that facilitates the creation of a proposed solution through the data analysis .

This article looks at the concept of problem statements, their role in a research project, and how to write a problem statement for conducting effective research.

While data collection and data analysis get most of the attention in any given primary research project, research relies a great deal on the amount of effort placed in the preparation of the research design. This preparation involves demonstrating a thorough understanding of the current research in order to assess the value and novelty of the new research being presented.

To ensure that the primary research and its underlying research questions are novel and interesting in their contributions to scientific knowledge, the overall study is supported by a robust and rigorous literature review . This review should provide a comprehensive survey of the conceptual and empirical knowledge relevant to the study being conducted.

What is the problem statement?

A problem statement bridges the literature review and the resulting study. It synthesizes the salient points and gaps in the existing research and makes an argument about the kind of research that should be conducted to generate new knowledge.

Why a problem statement is useful

An effective problem statement sets the tone for the rest of the study, in that it identifies what needs to be researched and how. This assertion is based on what existing research has already established, making it clear that new research would make a novel contribution to scholarly knowledge.

When to use a problem statement

A problem statement is a clear declaration of what research should be conducted and what theory should be developed. To that end, a problem statement can provide an explicit description for research audiences, which is useful for just about any research project. A problem statement explains why the larger research study is necessary or expands scientific understanding.

Here is an example of a problem statement that might be found in organizational research in financial services contexts.

The financial services industry suffers from issues arising from poor customer service, and the problem's financial costs continue to rise as the demand for financial services increases. Research and professional literature on the financial services industry have long posited that a business world increasingly dependent on automation and digitization is a root cause negatively affecting the financial service workforce's morale.

However, there is insufficient primary research to provide insights as to how to improve workplace conditions, a prerequisite for implementing solutions to provide better customer care. Further study is required in order to identify how financial service business leaders can create a productive workplace necessary for quality customer service outcomes.

The above problem statement looks at key workplace aspects influencing a financial services company's ability to identify potential solutions to deliver outstanding customer service. It refers to existing discussions in scholarly research and professional publications while asserting that such discussions have yet to illustrate any useful solutions to the problem that needs to be addressed.

The format of a problem statement

A study's own problem statement has three main components: a synthesis or summary of the existing knowledge relevant to the research inquiry, the gaps identified by that review and why those gaps are important, and the kind of research necessary to fill those gaps.

Let's examine the parts of another example problem statement that might belong in a larger study about education:

The contemporary literature has highlighted numerous cases where literacy teachers have elicited detailed and well-supported ideas from their students when asking more open-ended questions.

In the sentence above, the author has pointed to previous research (which should be described and correctly referenced in the literature review ) about the effects of open-ended questions on high school students. In particular, students offer more details for ideas during interaction.

However, previous research has not examined whether the engaging classroom interactions from open-ended questions are related to other learning outcomes.

Here, a lack of empirical evidence illustrates a gap in the research that needs to be filled.

Moreover, any evidence presented thus far has been primarily focused on learning outcomes that can be measured in standarized tests. This leaves other important learning outcomes overlooked, such as students' motivation, comprehension, or creativity.

The problem statement goes further by pointing out a methodological gap in understanding the effects of classroom interaction and why this is important.

Further research that captures students' perceptions and interpretations of being asked open-ended questions by their teachers can meaningfully extend current theory and practice by shedding light on other important learning outcomes.

The last component highlights how the present research makes a novel and interesting contribution to existing literature, thus justifying the research to be presented.

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An effective problem statement sets up the rest of the research inquiry and ensures a rigorous research process. Let's look at each of the particular stages of research influenced by problem statements.

Research question

The problem statement identifies the gaps in knowledge that existing scholarship has yet to address. With these gaps in mind, the study you present will be novel enough to justify the attention paid by your research audience.

Study design

The literature gap can also highlight what types of research should be conducted to contribute to new knowledge. A problem statement that describes a reliance on interview research methods , for example, can justify the use of observations in a new study.

Theoretical framework

A problem statement can highlight a theoretical gap, as in a research field's reliance on one particular theory while overlooking another. In that case, the problem statement can justify a novel theoretical framework to look at data from a new angle.

As the previous section illustrated, there are different kinds of problem statements that can be used to establish the novelty of a study. Three common types of statements are detailed in this section.

Empirical problem statement

In many cases, researchers can argue that scientific theory might lack sufficient evidence. Theory that has been established in one context (e.g., high school classrooms), for example, may not have evidence to be considered applicable to another context (e.g., university classrooms), requiring further research to affirm or challenge that theory.

Theoretical problem statement

A theoretical framework is simply a way of looking at data to generate knowledge. When you change the theory, you change the way you analyze the research . As a result, a problem statement that illustrates a focus on one particular theory can justify the use of another theory, provided it generates meaningful knowledge about your research topic .

Methodological problem statement

Method triangulation is the concept of examining a phenomenon through multiple research methods to gain a sufficiently robust understanding of the knowledge regarding that phenomenon. If the literature prefers one method (e.g., assessments) you can establish research novelty by conducting a study that employs another method (e.g., interviews ) and explaining how this contributes new understanding.

There is an intentional process to writing problem statements, even if it's just a few sentences. This section deals with what things belong and don't belong in a useful problem statement.

Questions to answer when writing a problem statement

As written above, make sure that your problem statement has three essential components:

What does your literature review say? While your background description of the research should be presented in thorough and transparent detail, you need to have a succinct summary of what the existing research says and how it informs your study design.

What is missing in the existing research and why is this important? A sufficiently comprehensive literature review should also allow you to describe what the current research has yet to establish or achieve. It is also important that you explain why this unexplored topic or question is important for theory or practice. This gap illustrates the problem and justifies the proposed solution in the present study that addresses this problem.

What study is required to contribute to scientific knowledge? Identifying the literature gap and explaining how your research address that gap in knowledge will help illustrate the novelty and contribution of the study you want to present.

Note that the overall study should address all of these questions in detail for transparency's sake. However, a succinct problem statement gives your research audience an easy place of reference to identify the salient points of the new research. Variations of your problem statement can be presented in your abstract, introduction, discussion, and conclusion sections.

What not to include in a problem statement

A problem statement should focus primarily on what existing knowledge has already established. Assertions that are not grounded in previously published studies are little more than speculation, and research inquiries that are built on unfounded assertions do not make for meaningful research. A problem statement rooted in a thoroughly-researched literature review mitigates this issue and ensures a robust link from scientific knowledge to new empirical analysis.

A useful problem statement should also focus on justifying the research that is to be presented. To that end, researchers should not assume that merely spotting a gap is sufficient. Rather, it is important to explain the theoretical or practical implications of addressing that gap to more convincingly justify the present research.

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• UConn Library
• Literature Review: The What, Why and How-to Guide
• Introduction

Literature Review: The What, Why and How-to Guide — Introduction

• Getting Started
• How to Pick a Topic
• Strategies to Find Sources
• Evaluating Sources & Lit. Reviews
• Tips for Writing Literature Reviews
• Writing Literature Review: Useful Sites
• Citation Resources
• Other Academic Writings

What are Literature Reviews?

So, what is a literature review? "A literature review is an account of what has been published on a topic by accredited scholars and researchers. In writing the literature review, your purpose is to convey to your reader what knowledge and ideas have been established on a topic, and what their strengths and weaknesses are. As a piece of writing, the literature review must be defined by a guiding concept (e.g., your research objective, the problem or issue you are discussing, or your argumentative thesis). It is not just a descriptive list of the material available, or a set of summaries." Taylor, D.  The literature review: A few tips on conducting it . University of Toronto Health Sciences Writing Centre.

Goals of Literature Reviews

What are the goals of creating a Literature Review?  A literature could be written to accomplish different aims:

• To develop a theory or evaluate an existing theory
• To summarize the historical or existing state of a research topic
• Identify a problem in a field of research 

Baumeister, R. F., & Leary, M. R. (1997). Writing narrative literature reviews .  Review of General Psychology , 1 (3), 311-320.

What kinds of sources require a Literature Review?

• A research paper assigned in a course
• A thesis or dissertation
• A grant proposal
• An article intended for publication in a journal

All these instances require you to collect what has been written about your research topic so that you can demonstrate how your own research sheds new light on the topic.

Types of Literature Reviews

What kinds of literature reviews are written?

Narrative review: The purpose of this type of review is to describe the current state of the research on a specific topic/research and to offer a critical analysis of the literature reviewed. Studies are grouped by research/theoretical categories, and themes and trends, strengths and weakness, and gaps are identified. The review ends with a conclusion section which summarizes the findings regarding the state of the research of the specific study, the gaps identify and if applicable, explains how the author's research will address gaps identify in the review and expand the knowledge on the topic reviewed.

• Example : Predictors and Outcomes of U.S. Quality Maternity Leave: A Review and Conceptual Framework:  10.1177/08948453211037398  

Systematic review : "The authors of a systematic review use a specific procedure to search the research literature, select the studies to include in their review, and critically evaluate the studies they find." (p. 139). Nelson, L. K. (2013). Research in Communication Sciences and Disorders . Plural Publishing.

• Example : The effect of leave policies on increasing fertility: a systematic review:  10.1057/s41599-022-01270-w

Meta-analysis : "Meta-analysis is a method of reviewing research findings in a quantitative fashion by transforming the data from individual studies into what is called an effect size and then pooling and analyzing this information. The basic goal in meta-analysis is to explain why different outcomes have occurred in different studies." (p. 197). Roberts, M. C., & Ilardi, S. S. (2003). Handbook of Research Methods in Clinical Psychology . Blackwell Publishing.

• Example : Employment Instability and Fertility in Europe: A Meta-Analysis:  10.1215/00703370-9164737

Meta-synthesis : "Qualitative meta-synthesis is a type of qualitative study that uses as data the findings from other qualitative studies linked by the same or related topic." (p.312). Zimmer, L. (2006). Qualitative meta-synthesis: A question of dialoguing with texts .  Journal of Advanced Nursing , 53 (3), 311-318.

• Example : Women’s perspectives on career successes and barriers: A qualitative meta-synthesis:  10.1177/05390184221113735

Literature Reviews in the Health Sciences

• UConn Health subject guide on systematic reviews Explanation of the different review types used in health sciences literature as well as tools to help you find the right review type
• << Previous: Getting Started
• Next: How to Pick a Topic >>
• Last Updated: Sep 21, 2022 2:16 PM
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3 Chapter 3 The Literature Review, Theory, Problem Statement, and Hypotheses

• Published: December 2009
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This chapter discusses the literature review in a social work dissertation including strategies for researching and evaluating the literature, tips for completing a literature search, as well as analyzing, synthesizing, integrating the literature, and finally writing the literature review itself. In addition, the relevance of theory to social work research is examined, as is the development of the statement of the problem, issues in developing hypotheses, and defining and operationalizing measurable variables.

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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
• Avoiding Plagiarism
• 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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How to write a literature review introduction (+ examples)

The introduction to a literature review serves as your reader’s guide through your academic work and thought process. Explore the significance of literature review introductions in review papers, academic papers, essays, theses, and dissertations. We delve into the purpose and necessity of these introductions, explore the essential components of literature review introductions, and provide step-by-step guidance on how to craft your own, along with examples.

Why you need an introduction for a literature review

In academic writing , the introduction for a literature review is an indispensable component. Effective academic writing requires proper paragraph structuring to guide your reader through your argumentation. This includes providing an introduction to your literature review.

It is imperative to remember that you should never start sharing your findings abruptly. Even if there isn’t a dedicated introduction section .

When you need an introduction for a literature review

There are three main scenarios in which you need an introduction for a literature review:

What to include in a literature review introduction

It is crucial to customize the content and depth of your literature review introduction according to the specific format of your academic work.

Academic literature review paper

The introduction of an academic literature review paper, which does not rely on empirical data, often necessitates a more extensive introduction than the brief literature review introductions typically found in empirical papers. It should encompass:

Regular literature review section in an academic article or essay

In a standard 8000-word journal article, the literature review section typically spans between 750 and 1250 words. The first few sentences or the first paragraph within this section often serve as an introduction. It should encompass:

Introduction to a literature review chapter in thesis or dissertation

Some students choose to incorporate a brief introductory section at the beginning of each chapter, including the literature review chapter. Alternatively, others opt to seamlessly integrate the introduction into the initial sentences of the literature review itself. Both approaches are acceptable, provided that you incorporate the following elements:

Examples of literature review introductions

Example 1: an effective introduction for an academic literature review paper.

To begin, let’s delve into the introduction of an academic literature review paper. We will examine the paper “How does culture influence innovation? A systematic literature review”, which was published in 2018 in the journal Management Decision.

Example 2: An effective introduction to a literature review section in an academic paper

The second example represents a typical academic paper, encompassing not only a literature review section but also empirical data, a case study, and other elements. We will closely examine the introduction to the literature review section in the paper “The environmentalism of the subalterns: a case study of environmental activism in Eastern Kurdistan/Rojhelat”, which was published in 2021 in the journal Local Environment.

Thus, the author successfully introduces the literature review, from which point onward it dives into the main concept (‘subalternity’) of the research, and reviews the literature on socio-economic justice and environmental degradation.

Examples 3-5: Effective introductions to literature review chapters

Numerous universities offer online repositories where you can access theses and dissertations from previous years, serving as valuable sources of reference. Many of these repositories, however, may require you to log in through your university account. Nevertheless, a few open-access repositories are accessible to anyone, such as the one by the University of Manchester . It’s important to note though that copyright restrictions apply to these resources, just as they would with published papers.

Master’s thesis literature review introduction

Phd thesis literature review chapter introduction, phd thesis literature review introduction.

The last example is the doctoral thesis Metacognitive strategies and beliefs: Child correlates and early experiences Chan, K. Y. M. (Author). 31 Dec 2020 . The author clearly conducted a systematic literature review, commencing the review section with a discussion of the methodology and approach employed in locating and analyzing the selected records.

Steps to write your own literature review introduction

Master academia, get new content delivered directly to your inbox, the best answers to "what are your plans for the future", 10 tips for engaging your audience in academic writing, related articles, minimalist writing for a better thesis, how to deal with procrastination productively during thesis writing, the top 10 thesis defense questions (+ how to prepare strong answers), the best coursera courses for phd researchers in 2023.

SOC 200 - Sims: How to Write a Lit Review

• What are Literature Reviews?
• How to Write a Lit Review
• How to Choose a Topic
• Finding the Literature

How to write a literature review

Below are the steps you should follow when crafting a lit review for your class assignment.

• It's preferable if you can select a topic that you find interesting, because this will make the work seem less like work. 
• It's also important to select a topic that many researchers have already explored. This way, you'll actually have "literature" to "review."
• Sometimes, doing a very general search and reading other literature reviews can reveal a topic or avenue of research to you. 
• It's important to gain an understanding of your topic's research history, in order to properly comprehend how and why the current (emerging) research exists.
• One trick is to look at the References (aka Bibliographies aka Works Cited pages) of any especially relevant articles, in order to expand your search for those same sources. This is because there is often overlap between works, and if you're paying attention, one source can point you to several others.
• One method is to start with the most recently-published research and then use their citations to identify older research, allowing you to piece together a timeline and work backwards. 
• Chronologically : discuss the literature in order of its writing/publication. This will demonstrate a change in trends over time, and/or detail a history of controversy in the field, and/or illustrate developments in the field.
• Thematically : group your sources by subject or theme. This will show the variety of angels from which your topic has been studied. This method works well if you are trying to identify a sub-topic that has so far been overlooked by other researchers.
• Methodologically : group your sources by methodology. For example, divide the literature into categories like qualitative versus quantitative, or by population or geographical region, etc. 
• Theoretically : group your sources by theoretical lens. Your textbook should have a section(s) dedicated to the various theories in your field. If you're unsure, you should ask your professor.
• Are there disagreements on some issues, and consensus on others?
• How does this impact the path of research and discovery?
• Many articles will have a Limitations section, or a Discussion section, wherein suggestions are provided for next steps to further the research.
• These are goldmines for helping you see a possible outlook of the situation. 
• Identifying any gaps in the literature that are of a particular interest to your research goals will help you justify why your own research should be performed. 
• Be selective about which points from the source you use. The information should be the most important and the most relevant. 
• Use direct quotes sparingly, and don't rely too heavily on summaries and paraphrasing. You should be drawing conclusions about how the literature relates to your own analysis or the other literature. 
• Synthesize your sources. The goal is not to make a list of summaries, but to show how the sources relate to one another and to your own analysis. 
• At the end, make suggestions for future research. What subjects, populations, methodologies, or theoretical lenses warrant further exploration? What common flaws or biases did you identify that could be corrected in future studies? 
• Common citation styles for sociology classes include APA and ASA.

Understanding how a literature review is structured will help you as you craft your own. 

Below is information and example articles that you should review, in order to comprehend why they are written a certain way.

Below are some very good examples of Literature Reviews:

Cyberbullying: How Physical Intimidation Influences the Way People are Bullied

Use of Propofol and Emergence Agitation in Children

Eternity and Immortality in Spinoza's 'Ethics'

As you read these, take note of the sections that comprise the main structure of each one:

• Introduction 
• Summarize sources
• Synthesize sources

Below are some articles that provide very good examples of an "Introduction" section, which includes a "Review of the Literature."

• Sometimes, there is both an Introduction section, and a separate Review of the Literature section (oftentimes, it simply depends on the publication)

Krimm, H., & Lund, E. (2021). Efficacy of online learning modules for teaching dialogic reading strategies and phonemic awareness.  Language, Speech & Hearing Services in Schools,  52 (4), 1020-1030.  https://doi.org/10.1044/2021_LSHSS-21-00011

Melfsen, S., Jans, T., Romanos, M., & Walitza, S. (2022). Emotion regulation in selective mutism: A comparison group study in children and adolescents with selective mutism.  Journal of Psychiatric Research,  151 , 710-715.  https://doi.org/10.1016/j.jpsychires.2022.05.040

Citation Resources

• MU Library's Citing Sources page
• Purdue OWL's APA Guide
• APA Citation Style - Quick Guide
• Purdue OWL's ASA Guide
• ASA Citation Style - Quick Tips

Suggested Reading

• How to: Conduct a Lit Review (from Central Michigan University)
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Home » Problem Statement – Writing Guide, Examples and Types

Problem Statement – Writing Guide, Examples and Types

Table of Contents

Problem Statement

Definition:

Problem statement is a clear, concise, and well-defined statement that outlines the issue or challenge that needs to be addressed. It is a crucial element in any project or research as it provides a clear understanding of the problem, its context, and its potential impact.

Types of Problem Statements

There are various types of problem statements, and the type of problem statement used depends on the context and purpose of the project or research. Some common types of problem statements are:

Business Problem Statement

Business Problem Statement identifies a problem or challenge within an organization that needs to be solved. It typically includes the impact of the problem on the organization and its stakeholders, such as customers, employees, or shareholders.

Research Problem Statement

Research Problem Statement outlines the research question or problem that the study aims to address. It describes the research objectives, the significance of the research, and the potential impact of the research findings.

Design Problem Statement

Design Problem Statement defines the problem or challenge that a design project aims to solve. It includes the user’s needs, the design constraints, and the desired outcomes of the design project.

Social Problem Statement

Social Problem Statement describes a problem or challenge in society that needs to be addressed. It typically includes the social, economic, or political impact of the problem and its effect on individuals or communities.

Technical Problem Statement

Technical Problem Statement defines a problem or challenge related to technology or engineering. It includes the technical requirements, constraints, and potential solutions to the problem.

Components of Problem Statement

The components of a problem statement may vary depending on the context and purpose of the project or research, but some common components include:

• Problem description : This component provides a clear and concise description of the problem, its context, and its impact. It should explain what the problem is, who is affected by it, and why it needs to be addressed.
• Background information : This component provides context for the problem by describing the current state of knowledge or practice related to the problem. It may include a review of relevant literature, data, or other sources of information.
• Objectives : This component outlines the specific objectives that the project or research aims to achieve. It should explain what the project or research team hopes to accomplish by addressing the problem.
• Scope : This component defines the boundaries of the problem by specifying what is included and excluded from the problem statement. It should clarify the limits of the project or research and ensure that the team remains focused on the core problem.
• Methodology : This component outlines the approach or methodology that the project or research team will use to address the problem. It may include details about data collection, analysis, or other methods used to achieve the objectives.
• Expected outcomes : This component describes the potential impact or outcomes that the project or research aims to achieve. It should explain how the solution or findings will address the problem and benefit the stakeholders.

How to write Problem Statement

Here are some general steps to follow when writing a problem statement:

• Identify the problem : Clearly identify the problem that needs to be addressed. Consider the context, stakeholders, and potential consequences of the problem.
• Research the problem: Conduct research to gather data and information about the problem. This may involve reviewing literature, analyzing data, or consulting with experts.
• Define the problem: Define the problem clearly and concisely, using specific language and avoiding vague or ambiguous terms. Be sure to include the impact of the problem and the context in which it occurs.
• State the objectives : Clearly state the objectives that the project or research aims to achieve. This should be specific and measurable, with clear outcomes that can be evaluated.
• Identify the scope: Identify the boundaries of the problem, including what is included and excluded from the problem statement. This helps to ensure that the team remains focused on the core problem.
• Outline the methodology : Outline the approach or methodology that the project or research team will use to address the problem. This should be based on research and best practices, and should be feasible and realistic.
• Describe the expected outcomes : Describe the potential impact or outcomes that the project or research aims to achieve. Be specific about how the solution or findings will address the problem and benefit the stakeholders.
• Revise and refine : Review the problem statement and revise it as needed to ensure clarity, accuracy, and completeness.

Applications of Problem Statement

Here are some of the applications of problem statements:

• Research : In academic research, problem statements are used to clearly define the research problem, identify the research question, and justify the need for the study. A well-crafted problem statement is essential for the success of any research project.
• Project management: In project management, problem statements are used to identify the issues or challenges that a project team needs to address. Problem statements help project managers to define project scope, set project goals, and develop project plans.
• Business strategy: In business strategy, problem statements are used to identify business challenges and opportunities. Problem statements help businesses to define their strategic objectives, develop action plans, and allocate resources.
• Product development : In product development, problem statements are used to identify customer needs and develop new products that address those needs. Problem statements help product developers to define product requirements, develop product features, and test product prototypes.
• Policy-making: In public policy-making, problem statements are used to identify social, economic, and environmental issues that require government intervention. Problem statements help policymakers to define policy objectives, develop policy options, and evaluate policy outcomes.

Examples of Problem Statements

Examples of Problem Statements are as follows:

• High student-to-teacher ratios are leading to decreased individualized attention and lower academic achievement.
• Limited funding for extracurricular activities is limiting opportunities for student development and engagement.
• The lack of diversity and inclusion in curriculum is limiting cultural understanding and perpetuating inequalities.
• The need for continuous professional development for teachers is crucial to improving teaching quality and student outcomes.
• Unequal access to education due to socio-economic status, geographical location, or other factors is contributing to disparities in academic achievement.
• The shortage of healthcare professionals is leading to increased patient wait times and decreased quality of care.
• Limited access to mental health services is contributing to the high prevalence of mental health issues and suicides.
• The over-prescription of opioids is contributing to the current opioid epidemic and increasing rates of addiction and overdose.
• Limited access to affordable and nutritious food is leading to poor nutrition and increased rates of chronic diseases.
• The lack of standardized electronic health record systems is limiting coordination of care and leading to medical errors.

Environmental Science

• Pollution from industrial and agricultural practices is contributing to climate change and increased health risks.
• The overexploitation of natural resources is leading to decreased biodiversity and ecological imbalance.
• Limited access to clean water is leading to health issues and affecting agriculture and economic development.
• The destruction of natural habitats is leading to the extinction of many species and disrupting ecosystems.
• Climate change is leading to more frequent and severe natural disasters, causing significant damage to infrastructure and displacement of populations.

Engineering

• The inadequate design and maintenance of bridges and roads is leading to increased accidents and fatalities.
• The lack of reliable and sustainable energy sources is contributing to environmental degradation and limiting economic growth.
• The lack of cybersecurity measures in critical infrastructure is making it vulnerable to cyber attacks and compromising public safety.
• The lack of efficient waste management systems is contributing to pollution and environmental degradation.
• The need for developing technologies that are environmentally friendly and sustainable is crucial to addressing climate change.

Social Work

• The lack of resources for mental health and social services is contributing to homelessness and the need for emergency assistance.
• The high prevalence of child abuse and neglect is leading to long-term physical and emotional harm to children.
• The lack of affordable and accessible childcare is limiting the opportunities for working parents, especially mothers.
• The stigmatization of mental health issues is limiting access to mental health services and perpetuating discrimination.
• The limited access to education, employment, and housing opportunities is contributing to poverty and social inequality.
• The increasing use of ad-blocking software is limiting the effectiveness of traditional digital advertising.
• The lack of transparency in digital advertising is leading to ad fraud and decreased trust in online marketing.
• The need to adapt marketing strategies to changing consumer behaviors and preferences is crucial to reaching target audiences effectively.
• The high competition in the marketplace is making it challenging for small businesses to compete with larger corporations.
• The need to balance marketing goals with ethical considerations is crucial to maintaining consumer trust and avoiding negative publicity.
• The high prevalence of anxiety and depression is leading to decreased productivity and increased healthcare costs.
• The limited access to mental health services in certain geographic areas is limiting access to care and contributing to disparities in mental health outcomes.
• The need for effective prevention and intervention programs for substance abuse and addiction is crucial to reducing rates of addiction and overdose.
• The lack of awareness and understanding of mental health issues is perpetuating stigma and limiting access to care.
• The need for culturally sensitive mental health services that are tailored to the needs of diverse populations is crucial to improving mental health outcomes.

Purpose of Problem Statement

The purpose of a problem statement is to clearly and concisely describe a specific problem or issue that needs to be addressed. It serves as a clear and succinct explanation of the problem, its context, and its importance, providing the necessary information to understand why the problem is worth solving. A well-crafted problem statement also helps to define the scope of the problem, which in turn helps to guide the research or problem-solving process. In essence, a problem statement sets the stage for identifying potential solutions and determining the best approach to solve the problem.

Characteristics of Problem Statement

The characteristics of a good problem statement include:

• Clear and concise : A problem statement should be written in clear and concise language, free of technical jargon, and easily understandable to the intended audience.
• Specific : The statement should clearly define the problem and its scope. It should identify the who, what, where, when, and why of the problem.
• Measurable : A problem statement should be measurable in some way, whether through quantitative or qualitative methods. This allows for objective assessment of progress towards solving the problem.
• Relevant : The problem statement should be relevant to the context in which it is presented. It should relate to the needs and concerns of stakeholders and the broader community.
• Feasible : The problem statement should be realistic and achievable, given the available resources and constraints.
• Innovative: A good problem statement should inspire creative and innovative solutions.
• Actionable : The problem statement should lead to actionable steps that can be taken to address the problem. It should provide a roadmap for moving forward.

Advantages of Problem Statement

Advantages of Problem Statement are as follows:

• Focus : A problem statement helps to clearly define the problem at hand and provides focus to the problem-solving process. It helps to avoid wasting time and resources on issues that are not relevant.
• Alignment : A well-written problem statement ensures that everyone involved in the problem-solving process is on the same page and understands the issue at hand. This alignment helps to ensure that efforts are focused in the right direction and that everyone is working towards the same goal.
• Clarity : A problem statement provides clarity about the nature of the problem and its impact. This clarity helps to facilitate communication and decision-making, making it easier to develop effective solutions.
• Innovation : A well-crafted problem statement can inspire creativity and encourage innovative thinking. By clearly defining the problem, it can help to identify new approaches and solutions that may not have been considered before.
• Measurability : A problem statement that is clear and specific can be used to measure progress and success. It helps to ensure that efforts are focused on addressing the root cause of the problem and that progress towards a solution can be tracked and evaluated.

Limitations of Problem Statement

While problem statements have many advantages, they also have some limitations, such as:

• Limited Scope: A problem statement is usually focused on a specific issue or challenge. As a result, it may not capture the full complexity of a larger problem, which can limit the effectiveness of the solutions developed.
• Lack of Detail : In some cases, problem statements may be too broad or lack sufficient detail, which can make it difficult to develop effective solutions. It’s important to ensure that the problem statement is specific enough to guide the problem-solving process.
• Bias : The way in which a problem statement is written can sometimes reflect the biases or assumptions of the person or group writing it. This can lead to a narrow or incomplete understanding of the problem and limit the effectiveness of the solutions developed.
• Inflexibility : A problem statement may be too rigid or inflexible, which can limit the exploration of alternative solutions. It’s important to keep an open mind and be willing to adapt the problem statement as new information or perspectives emerge.

About the author

Muhammad Hassan

Researcher, Academic Writer, Web developer

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Purdue Online Writing Lab Purdue OWL® College of Liberal Arts

Writing a Literature Review

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A literature review is a document or section of a document that collects key sources on a topic and discusses those sources in conversation with each other (also called synthesis ). The lit review is an important genre in many disciplines, not just literature (i.e., the study of works of literature such as novels and plays). When we say “literature review” or refer to “the literature,” we are talking about the research ( scholarship ) in a given field. You will often see the terms “the research,” “the scholarship,” and “the literature” used mostly interchangeably.

Where, when, and why would I write a lit review?

There are a number of different situations where you might write a literature review, each with slightly different expectations; different disciplines, too, have field-specific expectations for what a literature review is and does. For instance, in the humanities, authors might include more overt argumentation and interpretation of source material in their literature reviews, whereas in the sciences, authors are more likely to report study designs and results in their literature reviews; these differences reflect these disciplines’ purposes and conventions in scholarship. You should always look at examples from your own discipline and talk to professors or mentors in your field to be sure you understand your discipline’s conventions, for literature reviews as well as for any other genre.

A literature review can be a part of a research paper or scholarly article, usually falling after the introduction and before the research methods sections. In these cases, the lit review just needs to cover scholarship that is important to the issue you are writing about; sometimes it will also cover key sources that informed your research methodology.

Lit reviews can also be standalone pieces, either as assignments in a class or as publications. In a class, a lit review may be assigned to help students familiarize themselves with a topic and with scholarship in their field, get an idea of the other researchers working on the topic they’re interested in, find gaps in existing research in order to propose new projects, and/or develop a theoretical framework and methodology for later research. As a publication, a lit review usually is meant to help make other scholars’ lives easier by collecting and summarizing, synthesizing, and analyzing existing research on a topic. This can be especially helpful for students or scholars getting into a new research area, or for directing an entire community of scholars toward questions that have not yet been answered.

What are the parts of a lit review?

Most lit reviews use a basic introduction-body-conclusion structure; if your lit review is part of a larger paper, the introduction and conclusion pieces may be just a few sentences while you focus most of your attention on the body. If your lit review is a standalone piece, the introduction and conclusion take up more space and give you a place to discuss your goals, research methods, and conclusions separately from where you discuss the literature itself.

Introduction:

• An introductory paragraph that explains what your working topic and thesis is
• A forecast of key topics or texts that will appear in the review
• Potentially, a description of how you found sources and how you analyzed them for inclusion and discussion in the review (more often found in published, standalone literature reviews than in lit review sections in an article or research paper)
• Summarize and synthesize: Give an overview of the main points of each source and combine them into a coherent whole
• Analyze and interpret: Don’t just paraphrase other researchers – add your own interpretations where possible, 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 transition words and topic sentence to draw connections, comparisons, and contrasts.

Conclusion:

• Summarize the key findings you have taken from the literature and emphasize their significance
• Connect it back to your primary research question

How should I organize my lit review?

Lit reviews can take many different organizational patterns depending on what you are trying to accomplish with the review. Here are some examples:

• Chronological : The simplest approach is to trace the development of the topic over time, which helps familiarize the audience with the topic (for instance if you are introducing something that is not commonly known in your field). If you choose this strategy, be careful to avoid simply listing and summarizing sources in order. Try to analyze the patterns, turning points, and key debates that have shaped the direction of the field. Give your interpretation of how and why certain developments occurred (as mentioned previously, this may not be appropriate in your discipline — check with a teacher or mentor if you’re unsure).
• Thematic : If you have found some recurring central themes that you will continue working with throughout your piece, you can organize your literature review into subsections that address different aspects of the topic. For example, if you are reviewing literature about women and religion, key themes can include the role of women in churches and the religious attitude towards women.
• Qualitative versus quantitative research
• Empirical versus theoretical scholarship
• Divide the research by sociological, historical, or cultural sources
• Theoretical : In many humanities articles, the literature review is the foundation for the theoretical framework. You can use it to discuss various theories, models, and definitions of key concepts. You can argue for the relevance of a specific theoretical approach or combine various theorical concepts to create a framework for your research.

What are some strategies or tips I can use while writing my lit review?

Any lit review is only as good as the research it discusses; make sure your sources are well-chosen and your research is thorough. Don’t be afraid to do more research if you discover a new thread as you’re writing. More info on the research process is available in our "Conducting Research" resources .

As you’re doing your research, create an annotated bibliography ( see our page on the this type of document ). Much of the information used in an annotated bibliography can be used also in a literature review, so you’ll be not only partially drafting your lit review as you research, but also developing your sense of the larger conversation going on among scholars, professionals, and any other stakeholders in your topic.

Usually you will need to synthesize research rather than just summarizing it. This means drawing connections between sources to create a picture of the scholarly conversation on a topic over time. Many student writers struggle to synthesize because they feel they don’t have anything to add to the scholars they are citing; here are some strategies to help you:

• It often helps to remember that the point of these kinds of syntheses is to show your readers how you understand your research, to help them read the rest of your paper.
• Writing teachers often say synthesis is like hosting a dinner party: imagine all your sources are together in a room, discussing your topic. What are they saying to each other?
• Look at the in-text citations in each paragraph. Are you citing just one source for each paragraph? This usually indicates summary only. When you have multiple sources cited in a paragraph, you are more likely to be synthesizing them (not always, but often
• Read more about synthesis here.

The most interesting literature reviews are often written as arguments (again, as mentioned at the beginning of the page, this is discipline-specific and doesn’t work for all situations). Often, the literature review is where you can establish your research as filling a particular gap or as relevant in a particular way. You have some chance to do this in your introduction in an article, but the literature review section gives a more extended opportunity to establish the conversation in the way you would like your readers to see it. You can choose the intellectual lineage you would like to be part of and whose definitions matter most to your thinking (mostly humanities-specific, but this goes for sciences as well). In addressing these points, you argue for your place in the conversation, which tends to make the lit review more compelling than a simple reporting of other sources.

Educational resources and simple solutions for your research journey

What is a Problem Statement in Research? How to Write It with Examples

The question, “What is a research problem statement?” is usually followed by “Why should I care about problem statements, and how can it affect my research?” In this article, we will try to simplify the concept so that you not only grasp its meaning but internalize its importance and learn how to craft a problem statement.

To put it simply, a “problem statement” as the name implies is any statement that describes a problem in research. When you conduct a study, your aim as a researcher is to answer a query or resolve a problem. This learned information is then typically disseminated by writing a research paper that details the entire process for readers (both for experts and the general public). To better grasp this concept, we’ll try to explain what a research problem statement is from the viewpoint of a reader. For the purpose of clarity and brevity the topic is divided into subsections.

Table of Contents

What is a research problem?

A research problem is a clearly defined issue in a particular field of study that requires additional investigation and study to resolve. Once identified, the problem can be succinctly stated to highlight existing knowledge gaps, the importance of solving the research problem, and the difference between a current situation and an improved state.

But why is it important to have a research problem ready? Keep in mind that a good research problem helps you define the main concepts and terms of research that not only guide your study but help you add to or update existing literature. A research problem statement should ideally be clear, precise, and tangible enough to assist you in developing a framework for establishing the objectives, techniques, and analysis of the research project. Hence, any research project, if it is to be completed successfully,  must start with a well-defined research problem.

What is research problem statement?

A research problem statement in research writing is the most crucial component of any study, which the researcher must perfect for a variety of reasons, including to get funding and boost readership. We’ve already established that a research article’s “research problem” is a sentence that expresses the specific problem that the research is addressing. But first, let’s discuss the significance of the problem statement in research and how to formulate one, using a few examples.

Do you recall the thoughts that went through your head the last time you read a study article? Have you ever tried to quickly scan the introduction or background of the research article to get a sense of the context and the exact issue the authors were attempting to address through the study? Were you stuck attempting to pinpoint the key sentence(s) that encapsulates the background and context of the study, the motivation behind its initial conduct, and its goals? A research problem statement is the descriptive statement which conveys the issue a researcher is trying to address through the study with the aim of informing the reader the context and significance of performing the study at hand . The research problem statement is crucial for researchers to focus on a particular component of a vast field of study, and for readers to comprehend the significance of the research. A well-defined problem allows you to create a framework to develop research objectives or hypotheses.

Now that we are aware of the significance of a problem statement in research, we can concentrate on creating one that is compelling. Writing a problem statement is a fairly simple process; first, you select a broad topic or research area based on your expertise and the resources at your disposal. Then, you narrow it down to a specific research question or problem relevant to that area of research while keeping the gaps in existing knowledge in mind. To give you a step-by-step instruction on how to write a problem statement for research proposal we’ve broken the process down into sections discussing individual aspects.

When to write a problem statement?

The placement of the research problem in the research project is another crucial component when developing a problem statement. Since the research problem statement is fundamental to writing any research project, it is best to write it at the start of the research process, before experimental setup, data collection, and analysis. Without identifying a specific research problem, you don’t know what exactly you are trying to address through the research so it would not be possible for you to set up the right conditions and foundation for the research project.

It is important to describe the research problem statement at the beginning of the research process to guide the research design and methodology. Another benefit of having a clear and defined research problem early on is that it helps researchers stay on track and focus on the problem at hand without deviating into other trajectories. Writing down the research problem statement also ensures that the current study is relevant, fitting, and fills a knowledge gap. However, note that a research statement can be refined or modified as the research advances and new information becomes available. This could be anything from further deconstructing a specific query to posing a fresh query related to the selected topic area. In fact, it is common practice to revise the problem statement in research to maintain specificity and clarity and to allow room to reflect advancement in the research field.

Bonus point:

A well-defined research problem statement that is referenced in the proper position in the research proposal/article is crucial to effectively communicate the goal and significance of the study to all stakeholders concerned with the research. It piques the reader’s interest in the research area, which can advance the work in several ways and open up future partnerships and even employment opportunities for authors.

What does a research problem statement include?

If you have to create a problem statement from scratch, follow the steps/important aspects listed below to create a well-defined research problem statement.

• Describe the wide-ranging research topics

To put things in perspective, it is important to first describe the background of the research issue, which derives from a broad area of study or interest that the research project is concerned with.

• Talk about the research problem/issue

As mentioned earlier, it’s important to state the problem or issues that the research project seeks to address in a clear, succinct manner, preferably in a sentence or two to set the premise of the entire study.

• Emphasize the importance of the issue

After defining the problem your research will try to solve, explain why it’s significant in the larger context and how your study aims to close the knowledge gap between the current state of knowledge and the ideal scenario.

• Outline research questions to address the issue

Give a brief description of the list of research questions your study will use to solve the problem at hand and explain how these will address various components of the problem statement.

• Specify the key goals of the research project

Next, carefully define a set of specific and measurable research objectives that the research project aims to address.

• Describe the experimental setup

Be sure to include a description of the experimental design, including the intended sample (population/size), setting, or context in the problem statement.

• Discuss the theoretical framework

Mention the numerous theoretical ideas and precepts necessary to comprehend the study issue and guide the research activity in this section.

• Include the research methodology

To provide a clear and concise research framework, add a brief description of the research methodologies, including collection and analysis of data, which will be needed to address the research questions and objectives.

Characteristics of a research problem statement

It is essential for a research statement to be clear and concise so that it can guide the development of the research project. A good research statement also helps other stakeholders in comprehending the scope and relevance of the research, which could further lead to opportunities for collaboration or exploration. Here is a list of the key characteristics of a research problem that you should keep in mind when writing an effective research problem statement.

• The “need” to resolve the issue must be present.

It is not enough to choose a problem in your area of interest and expertise; the research problem should have larger implications for a population or a specific subset. Unless the significance of the research problem is elaborated in detail, the research is not deemed significant. Hence, mentioning the “need” to conduct the research in the context of the subject area and how it will create a difference is of utmost importance.

• The research problem needs to be presented rationally and clearly

The research statement must be written at the start and be simple enough for even researchers outside the subject area to understand. The two fundamental elements of a successful research problem statement are clarity and specificity. So, check and rewrite your research problem statement if your peers have trouble understanding it. Aim to write in a straightforward manner while addressing all relevant issues and coherent arguments.

• The research issue is supported by facts and evidence

Before you begin writing the problem statement, you must collect all relevant information available to gain a better understanding of the research topic and existing gaps. A thorough literature search will give you an idea about the current situation and the specific questions you need to ask to close any knowledge gaps. This will also prevent you from asking the questions or identifying issues that have already been addressed. Also, the problem statement should be based on facts and data and should not depend upon hypothetical events.

• The research problem should generate more research questions

Ideally, the research problem should be such that it helps advance research and encourage more questions. The new questions could be specific to the research that highlights different components or aspects of the problem. These questions must also aid in addressing the problem in a more comprehensive manner which provides a solid foundation for the research study.

• The research problem should be tangible

The research issue should be concrete, which means that the study project’s budget and time constraints should be met. The research problem should not call for any actions and experiments that are impractical or outside of your area of competence.

To summarize the main characteristics of a research problem statement, it must:

• Address the knowledge gap
• Be current and relevant
• Aids in advancing the field
• Support future research
• Be tangible and should suit researcher’s time and interest
• Be based on facts and data

  How to write a problem statement in research proposal

The format of a problem statement might vary based on the nature and subject of the research; there is no set format. It is typically written in clear, concise sentences and can range from a few sentences to a few pages. Three considerations must be made when formulating a problem statement for a research proposal:

• Context: The research problem statement needs to be created in the right setting with sufficient background information on the research topic. Context makes it easier to distinguish between the current state and the ideal one in which the issue would not exist. In this section, you can also include instances of any prior attempts and significant roadblocks to solving the problem.
• Relevance: The main goal of the researcher here is to highlight the relevance of the research study. Explain how the research problem affects society or the field of research and, if the study is conducted to mitigate the issue, what an ideal scenario would look like. Who your study will most affect if the issue is resolved and how it can impact future research are other arguments that might be made in this section.
• Strategy: Be sure to mention the goals and objectives of your research, and your approach to solve the problem. The purpose of this section is to lay out the research approach for tackling various parts of the research subject.

Examples of problem statement in research proposal

To put what we learned into practice, let’s look at an example of a problem statement in a research report. Suppose you decide to conduct a study on the topic of attention span of different generations. After a thorough literature search you concluded that the attention span of university students is reducing over generations compared to the previous one, even though there are many websites and apps to simplify tasks and make learning easy . This decrease in attention span is attributed to constant exposure to digital content and multiple screens.

In this scenario, the problem statement could be written as – “The problem this study addresses is the lack of regulative measures to control consumption of digital content by young university students, which negatively impacts their attention span”. The research’s goals and objectives, which may employ strategies to increase university students’ attention span by limiting their internet exposure, can then be described in more detail in subsequent paragraphs.

Frequently asked questions

What is a problem statement.

A problem statement is a succinct and unambiguous overview of the research issue that the study is trying to solve.

What is the difference between problem statement and thesis statement?

A problem statement is different from a thesis statement in that the former highlights the main points of a research paper while emphasizing the hypothesis, whilst the latter identifies the issue for which research is being done.

Why is a problem statement needed in a research proposal?

A problem statement identifies the specific problem that the researchers are trying to solve through their research. It is necessary to establish a framework for the project, focus the researcher’s attention, and inform stakeholders of the study’s importance.

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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: .

• 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.

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.

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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: 

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. 

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. 

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. 

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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How to write a good literature review 

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. 

Whether you’re exploring a new research field or finding new angles to develop an existing topic, sifting through hundreds of papers can take more time than you have to spare. But what if you could find science-backed insights with verified citations in seconds? That’s the power of Paperpal’s new Research feature!  

How to write a literature review faster with Paperpal?  

Paperpal, an AI writing assistant, integrates powerful academic search capabilities within its writing platform. With the Research | Cite feature, you get 100% factual insights, with citations backed by 250M+ verified research articles, directly within your writing interface. It also allows you auto-cite references in 10,000+ styles and save relevant references in your Citation Library. By eliminating the need to switch tabs to find answers to all your research questions, Paperpal saves time and helps you stay focused on your writing.   

Here’s how to use the Research feature:  

• Ask a question: Get started with a new document on paperpal.com. Click on the “Research | Cite” feature and type your question in plain English. Paperpal will scour over 250 million research articles, including conference papers and preprints, to provide you with accurate insights and citations. 

• Review and Save: Paperpal summarizes the information, while citing sources and listing relevant reads. You can quickly scan the results to identify relevant references and save these directly to your built-in citations library for later access. 
• Cite with Confidence: Paperpal makes it easy to incorporate relevant citations and references in 10,000+ styles 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.  

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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How to Write a Problem Statement for a Research Paper?

What is a problem statement in research, and why is it crucial? A research problem statement is a clear and precise declaration that identifies the issue or challenge your study aims to tackle. It needs to be understandable to both experts and non-experts alike. You can ensure your statement is effective by basing it on established knowledge and avoiding unsupported claims. This way, you can create a solid foundation for your research.

Okay, we answered what is a problem statement, but why is grounding your statement in a literature review important? A thorough review of existing studies not only provides context but also connects your research to the broader scientific community. This approach helps ensure that your problem statement is both relevant and meaningful, guiding your empirical investigation with a strong, evidence-based foundation.

To effectively write a research problem statement, follow these steps:

• Begin by pinpointing the broad field or subject area that captures your interest.
• Narrow down this general area to a particular issue or challenge that needs attention.
• Provide context by explaining why the problem is important and what gap in current knowledge it addresses.
• Articulate the problem in a clear, succinct manner, ensuring that the language is accessible to your target audience.
• Write in an unbiased and neutral tone, steering clear of subjective language and personal opinions.

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How to Write a Problem Statement in Specific Situations

Now, let our online essay writer service address how to write a problem statement for a research paper tailored to different research contexts.

Academic Research

In academic research, a problem statement is written after conducting a preliminary literature review. This initial review helps you identify gaps in current knowledge and frame your problem within the context of existing studies. The problem statement should then clearly articulate the specific issue you intend to investigate, its significance, and how your research will contribute to the field.

• Preliminary Literature Review : Identify gaps or inconsistencies in existing research.
• Define the Problem : State the issue clearly, based on the literature review.
• Significance : Explain why the problem matters and what new insights your research will provide.

Business and Management

In business and management contexts, problem statements often address practical issues that impact organizational performance or strategy. These statements are usually formulated after identifying a specific challenge or inefficiency within the company.

• Identify a Challenge : Pinpoint a specific problem affecting the organization.
• Gather Data : Collect relevant data to understand the problem's scope and impact.
• State the Problem : Clearly describe the issue, focusing on its business implications.
• Propose Objectives : Outline the goals of your research or proposed solutions.

Social and Policy Research

For social and policy research, problem statements focus on societal issues or policy gaps. These statements should highlight the broader implications of the problem and the potential impact of the research findings on policy or society.

• Identify a Social Issue : Choose a relevant social or policy issue that needs investigation.
• Contextualize : Provide background information to frame the issue within a larger societal context.
• Define the Problem : Clearly state the issue and its implications for society or policy.
• Significance : Explain how addressing the problem can lead to social or policy improvements.

What is Included in a Problem Statement

A comprehensive problem statement does more than just identify a gap in understanding or a lack of essential data. It also explains the importance of addressing this gap. Here are key components to include:

Step 1. Contextualize the Problem

To effectively understand how to write a problem statement for a research paper, you should first contextualize the problem and start by offering background information that sets the stage for your research. This involves presenting the broader area of study and then narrowing it down to the specific issue you will address. By doing so, you help your audience understand the environment in which the problem exists.

Example: If your research focuses on the impact of financial literacy programs on small business owners' ability to secure loans, begin with an overview of the importance of financial literacy in business. Discuss how small businesses contribute to the economy and summarize previous studies on financial literacy's general effects on business success. This context helps to frame your specific research question within the larger discourse.

Detailed Steps:

• Introduce the General Area : Begin with a broad discussion of the field.
• Highlight Key Issues : Identify major themes or problems in the field.
• Narrow Down : Focus on the specific issue your research will address.

Step 2. Establish the Study's Significance

After setting the context, it's crucial to explain why your research is significant. This involves articulating the importance of the problem statement and how your research will contribute to the field. Here, you answer questions like: Why does this problem matter? Who will benefit from the findings?

Example: Continuing with the financial literacy example, explain why understanding its impact on small business owners' ability to secure loans is crucial. Highlight the potential consequences of poor financial literacy, such as higher loan rejection rates, increased financial instability, and business failures. Emphasize how your research could inform policymakers, financial institutions, and educational program designers, leading to more effective financial literacy programs and better support for small businesses.

• Highlight the Gap : Clearly state what is missing in current research.
• Discuss Implications : Explain the broader impact of addressing this gap.
• Identify Beneficiaries : Point out who will benefit from your research findings.

Step 3. Set Your Objectives

Your statement should conclude with clear research aims and objectives. This section outlines what you intend to achieve and the steps you will take to address the problem. Be specific about your research goals and the methods you will use to accomplish them.

Example: For the financial literacy and loan acquisition study, your aims might include evaluating the current financial literacy levels among small business owners, examining the correlation between financial literacy and loan approval rates, and assessing the effectiveness of existing financial literacy programs. Your objectives could be to conduct surveys of small business owners, analyze loan application data, and develop recommendations for improving financial literacy programs based on your findings.

• State Your Aims : Clearly articulate the primary goals of your research.
• Outline Your Objectives : Break down the aims into specific, actionable objectives.
• Describe Your Methods : Briefly mention the research methods you will use to achieve these objectives.

Problem Statement Example

Here, we prepared two research problem statement examples that can serve as unique templates for developing your own statement.

Characteristics of a Research Problem Statement

According to Kerlinger, a good problem statement asks what relationship exists between two or more variables. When learning how to write a problem statement, make sure it has the following characteristics:

Writing a clear problem statement helps you pinpoint the exact issue, explain why it matters, and set specific goals. Whether you're looking into social issues or business problems, a well-defined statement directs your study toward valuable insights and solutions. If you ever need expert research proposal help , remember that together, we can transform your ideas into impactful studies that drive positive change!

Scratching Your Head Over Problem Statements?

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What is a Problem Statement in Research?

How to write a problem statement, how do you structure a good problem statement.

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• Rupam. (n.d.). Research Problem and its Characteristics . https://www.tpscollegepatna.org/admin-panel/image/content/Research%20Problem%20and%20its%20Characteristics.pdf
• Characteristics of a Quality Problem Statement . (n.d.). https://static1.squarespace.com/static/57e9e21f2e69cf4b7cee5ba0/t/5935d3e003596eebfc6b0463/1496699873373/Characteristics+of+a+Quality+Problem+Statement+%281%29.pdf

How to review the literature to effectively address the problem statement and objectives of a thesis?

The problem statement and research questions are essential in thesis research . They indicate the objectives that the thesis aims to achieve and provide a clear direction for the research questions. They are a part of the Introduction chapter of a thesis. Another important element of the introduction chapter is the problem statement. It provides a brief overview and background of the research. It is essential to not only frame these sections well but to also connect them to the literature review chapter of the thesis. The purpose of a literature review (LR) is to understand and establish a familiarity with the topic. It requires a thorough examination of books, articles, and scholarly articles relevant to a particular area of research. If the literature review is not in conjunction with the problem statement and research questions, then the problem statement won’t be effectively addressed. This article explains how to review the literature to effectively address the thesis objective and problem statement.

Connecting the literature review to the problem statement

A problem statement catches the reader’s attention and establishes the significance of the topic (Hart, 2018). The purpose of a problem statement is to transform the generalized issue or a problem into a well-defined problem. For this, it is essential to first identify the research gap . It is used as a medium for developing a sustained and complete study (Machi and McEvoy, 2016). The research gap is identified after conducting a thorough literature review. Therefore, it is the bridge between the LR and the problem statement.

• First, select a question or topic of a specific area. For instance, while choosing the marketing field, the specific area can be “Consumer satisfaction with electronics from Samsung”.
• Next, identify the keywords related to the study and search for relevant secondary studies on the topic. For example, in the above case it can be “Consumer satisfaction with Samsung electronics”.
• The available literature should be thoroughly studied to identify a research gap. For example, there is not enough evidence in context of the country Kenya. Another possible gap is, there is not enough evidence from a particular demographic, senior citizens.
• Now, frame the problem statement. A specific format is recommended for writing the thesis problem statement. Evidence from the review of literature review should be well connected to it. This can be in the form of statistics, theory, or concepts.

For framing a robust problem statement, at least 15-20 key studies containing empirical evidence related to the research area must be explored.

Connecting it to the objectives of a thesis

The most important indicator of a research’s purpose is its objectives . It lays down simply what the thesis investigation is trying to achieve. A thesis can have more than one objective. Ideally, a thesis has 1 main aim and 4-5 supporting objectives. While the thesis problem statement is written after a thorough review of the literature, the objectives are framed before it.

The objectives of an investigation can be aligned to the review of the literature with a conceptual framework . The conceptual framework comprises one or more concepts or theories and findings from the literature (Xiao and Watson, 2019). It generally defines the concerned variables of the study and draws out the relation to each other. Thus, a conceptual framework is a critical analytical tool having multiple contexts and variations. Align the thesis objectives to the review of literature by earmarking the key variables and expanding them. It is that way where ideas are arranged to achieve the purpose of the investigation. This is a general perception while addressing a research problem. Some critical components of a conceptual framework are:

• defining the topic,
• qualitative characteristics,
• features, and
• presentation.

Apart from this, another linking aspect is a hypothesis. It is a prediction made about the result of the study. A hypothesis statement is crucial in research (Pecher et. al . 2020). This helps in avoiding blind investigation. The significance of a hypothesis in research can be illustrated as focused research, describing the core concept and providing a scope. The hypothesis statement in a study is drafted as per the aim and objective of the study. It is beneficial in connecting the literature review and the objectives. This signifies the relationship between the research objectives in various aspects of the review of the literature. The hypothesis must outline the critical thesis objectively. The hypothesis is an explicit assumption or an idea developed to be tested to examine its trueness and relevance. It is tentative and helps to test the reliability.

Strategise how to review the literature effectively

It can be summarized that to address the problem statement of a thesis effectively, formulating a clear research question is essential. The thesis objectives and problem statements must be adequately explained, which helps the reader understand the researcher’s philosophy clearly by using an appropriate conceptual framework. The literature review is an overview of various arguments which are supported by the research questions. The main points to keep in mind while framing the objectives are:

• identifying the variables that need to be measured,
• establishing a limit and,
• avoiding the collection of unnecessary data.

Moreover, the critical components of a literature review are the information section, the body of the study, and the conclusion. Planning, reading, and a good investigation is the key strategy review literature.

• Hart, C., 2018. Doing a literature review: Releasing the research imagination. Thousand Oaks: Sage.
• Machi, L.A. and McEvoy, B.T., 2016. The literature review: Six steps to success. Thousand Oaks: Sage.
• Pecher, D., Chu, Z. and Byrd, V.L., 2020, October. Developing Research Questions: A method for transforming a question into a problem statement. In  2020 IEEE Frontiers in Education Conference (FIE)  (pp. 1-8). IEEE.
• Xiao, Y. and Watson, M., 2019. Guidance on conducting a systematic literature review.  Journal of Planning Education and Research ,  39 (1), pp.93-112.
• Priya Chetty
• Kinjal Aacha

I am a management graduate with specialisation in Marketing and Finance. I have over 12 years' experience in research and analysis. This includes fundamental and applied research in the domains of management and social sciences. I am well versed with academic research principles. Over the years i have developed a mastery in different types of data analysis on different applications like SPSS, Amos, and NVIVO. My expertise lies in inferring the findings and creating actionable strategies based on them. 

Over the past decade I have also built a profile as a researcher on Project Guru's Knowledge Tank division. I have penned over 200 articles that have earned me 400+ citations so far. My Google Scholar profile can be accessed here . 

I now consult university faculty through Faculty Development Programs (FDPs) on the latest developments in the field of research. I also guide individual researchers on how they can commercialise their inventions or research findings. Other developments im actively involved in at Project Guru include strengthening the "Publish" division as a bridge between industry and academia by bringing together experienced research persons, learners, and practitioners to collaboratively work on a common goal. 

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Neal Haddaway

October 19th, 2020, 8 common problems with literature reviews and how to fix them.

3 comments | 320 shares

Estimated reading time: 5 minutes

Literature reviews are an integral part of the process and communication of scientific research. Whilst systematic reviews have become regarded as the highest standard of evidence synthesis, many literature reviews fall short of these standards and may end up presenting biased or incorrect conclusions. In this post, Neal Haddaway highlights 8 common problems with literature review methods, provides examples for each and provides practical solutions for ways to mitigate them.

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Researchers regularly review the literature – it’s an integral part of day-to-day research: finding relevant research, reading and digesting the main findings, summarising across papers, and making conclusions about the evidence base as a whole. However, there is a fundamental difference between brief, narrative approaches to summarising a selection of studies and attempting to reliably and comprehensively summarise an evidence base to support decision-making in policy and practice.

So-called ‘evidence-informed decision-making’ (EIDM) relies on rigorous systematic approaches to synthesising the evidence. Systematic review has become the highest standard of evidence synthesis and is well established in the pipeline from research to practice in the field of health . Systematic reviews must include a suite of specifically designed methods for the conduct and reporting of all synthesis activities (planning, searching, screening, appraising, extracting data, qualitative/quantitative/mixed methods synthesis, writing; e.g. see the Cochrane Handbook ). The method has been widely adapted into other fields, including environment (the Collaboration for Environmental Evidence ) and social policy (the Campbell Collaboration ).

Despite the growing interest in systematic reviews, traditional approaches to reviewing the literature continue to persist in contemporary publications across disciplines. These reviews, some of which are incorrectly referred to as ‘systematic’ reviews, may be susceptible to bias and as a result, may end up providing incorrect conclusions. This is of particular concern when reviews address key policy- and practice- relevant questions, such as the ongoing COVID-19 pandemic or climate change.

These limitations with traditional literature review approaches could be improved relatively easily with a few key procedures; some of them not prohibitively costly in terms of skill, time or resources.

In our recent paper in Nature Ecology and Evolution , we highlight 8 common problems with traditional literature review methods, provide examples for each from the field of environmental management and ecology, and provide practical solutions for ways to mitigate them.

There is a lack of awareness and appreciation of the methods needed to ensure systematic reviews are as free from bias and as reliable as possible: demonstrated by recent, flawed, high-profile reviews. We call on review authors to conduct more rigorous reviews, on editors and peer-reviewers to gate-keep more strictly, and the community of methodologists to better support the broader research community. Only by working together can we build and maintain a strong system of rigorous, evidence-informed decision-making in conservation and environmental management.

Note: This article gives the views of the authors, and not the position of the LSE Impact Blog, nor of the London School of Economics. Please review our  comments policy  if you have any concerns on posting a comment below

Image credit:  Jaeyoung Geoffrey Kang  via unsplash

About the author

Neal Haddaway is a Senior Research Fellow at the Stockholm Environment Institute, a Humboldt Research Fellow at the Mercator Research Institute on Global Commons and Climate Change, and a Research Associate at the Africa Centre for Evidence. He researches evidence synthesis methodology and conducts systematic reviews and maps in the field of sustainability and environmental science. His main research interests focus on improving the transparency, efficiency and reliability of evidence synthesis as a methodology and supporting evidence synthesis in resource constrained contexts. He co-founded and coordinates the Evidence Synthesis Hackathon (www.eshackathon.org) and is the leader of the Collaboration for Environmental Evidence centre at SEI. @nealhaddaway

Why is mission creep a problem and not a legitimate response to an unexpected finding in the literature? Surely the crucial points are that the review’s scope is stated clearly and implemented rigorously, not when the scope was finalised.

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#9. Most of them are terribly boring. Which is why I teach students how to make them engaging…and useful.

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Normocomplementemic Urticarial Vasculitis Following Influenza Vaccination: A Case Report and Review of the Literature

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Case report, literature review.

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Urticarial vasculitis is characterized by persistent urticarial lesions lasting over 24 h. Urticarial vasculitis is often triggered by medications, infections, and autoimmune disorders. However, vaccinations against viral and bacterial pathogens have recently been documented to induce urticarial vasculitis. We describe the case of a 67-year-old woman who was presented with an extensive erythematous and purpuric rash without systemic symptoms 3 days after an influenza vaccination. She was diagnosed with normocomplementemic urticarial vasculitis based on clinical findings, normal complement levels, and histopathological findings of leukocytoclastic vasculitis. After receiving oral histamines, she showed complete resolution 3 months after receiving the influenza vaccination. Although vaccination-associated vasculitis is common, urticarial vasculitis following vaccinations is rare. We reviewed 13 cases of urticarial vasculitis following a wide range of vaccines, including those against Bacillus Calmette–Guérin, serogroup B meningococcus, influenza, and coronavirus disease. We conducted a comprehensive review of various aspects, including age, sex, past medical history, type of vaccination, number of vaccinations, onset time, cutaneous symptoms, place of eruption, systemic symptoms, laboratory disorders, treatment period, and treatment of urticarial vasculitis. Two patients developed hypocomplementemic urticarial vasculitis after vaccination, and both experienced systemic symptoms such as arthralgia and fever. In this review, no significant differences were found in the data, which may be attributed to the small number of cases. The mechanisms underlying the induction of urticarial vasculitis by vaccines remain unknown; however, in addition to immune complex deposition and complement activation due to vaccine components, molecular mimicry may trigger urticarial vasculitis by producing vaccine-derived pathogenic antigen antibodies. This case study emphasizes the need for heightened awareness and further investigation of urticarial vasculitis as a rare adverse effect of vaccination.

• vaccination
• anticardiolipin antibody
• molecular mimicry

Urticarial vasculitis (UV) is distinguished by urticarial lesions that persist for more than 24 hours. Citation 1 Histopathological examination of UV reveals leukocytoclastic vasculitis, which is characterized by disruption of vascular walls, extravasation of erythrocytes, and perivascular infiltration of neutrophils and lymphocytes. Citation 1 Diagnosis of UV is commonly based on the presence of wheal formation and histological evidence of leukocytoclastic vasculitis. Citation 1 Unlike typical urticaria, UV often presents with distinctive skin manifestations, such as purpura or rashes, that regress with pigmentation. Citation 1 UV can be triggered by medications, cancer, autoimmune or auto-inflammatory diseases, or infections. Citation 1 Recently, vaccinations against viral or bacterial pathogens have also been found to induce UV. Citation 2–13 Cases of UV after vaccination against Bacillus Calmette–Guérin (BCG), serogroup B meningococcal, influenza, and coronavirus disease 2019 (COVID-19) have been reported. Citation 2–13 Many cases of vasculitis induced by vaccinations, such as those against influenza or COVID-19, have been reported, but cases of UV following viral vaccinations are limited. Citation 14 , Citation 15 Herein, we report the second case of UV after influenza vaccination Citation 4 and review 13 reported cases of UV attributed to vaccinations against viral or bacterial infections. Citation 2–13

Figure 1 Clinical and histopathological features. ( a – c ) Physical examination revealed wheals, edematous erythema, purpura, and livedo reticularis. ( d ) Histopathological examination of the edematous erythema showing capillary dilation and perivascular cellular infiltration. (HE staining, x40) ( e ) Histopathological examination of the edematous erythema showing perivascular neutrophil and eosinophil infiltration, nuclear dust, vessel wall destruction, and fibrin deposition in the upper dermis (HE staining, x400).

Table 1 13 Cases of Vaccination-Associated Urticarial Vasculitis

Figure 2 Graph data features ( a ) Graph of the data regarding onset time of urticarial vasculitis following the first vaccination versus that following second or later vaccination, showing no statistical difference between the two groups. ( b ) Graph of the data regarding treatment periods of normocomplementemic urticarial vasculitis versus hypocomplementemic urticarial vasculitis, showing no statistical difference between the two groups. ( c ) Graph of the data regarding treatment periods of normocomplementemic urticarial vasculitis following the first vaccination versus that following the second/third vaccination, showing no statistical difference between the two groups.

While most patients presented with urticaria-like or purpuric eruptions on the trunk and extremities, in some patients, the rashes appeared only on the lower limbs, only on the upper limbs, or on the face. Ten (77%) patients had no systemic symptoms, whereas three (23%) had fever and arthralgia. Eleven (85%) patients had normal complement levels, while two (15%) had lowered complement levels. Two patients with hypocomplementemic UV (HUV) experienced systemic symptoms such as arthralgia and fever and were treated for more than 6 months; one of them developed hemophagocytic lymphohistiocytosis (HLH) during the course of HUV treatment and required steroid pulse therapy with tapered oral prednisone and cyclosporine.

The condition of 11 patients with NUV improved within 2 weeks to 3 months. The average treatment period for HUV was 32 ± 11.3 weeks, while that for NUV was 3.78 ± 3.77 weeks. However, the difference between the two groups was not statistically significant (P= 0.168) ( Figure 2b ). Moreover, the average treatment period of NUV after the first vaccination was 4.67 ± 3.06 weeks, while that of NUV after the second or third vaccination was 1.25 ± 0.50 weeks. However, the difference between the two groups was not statistically significant (p = 0.190) ( Figure 2c ). In our patients, the treatment period for NUV might have been longer because oral prednisone was not initiated.

Among the patients with NUV, two (15%) showed improvements without any treatment, four (31%) showed improvements primarily with antihistamines without oral prednisone, and six (46%) required oral prednisone. Other treatments included oral administration of indomethacin or dapsone.

UV is classified into idiopathic cases with no known cause and secondary cases that occur due to triggers such as autoimmune diseases, medications, infections, or malignancies. Citation 1

Both UV and systemic lupus erythematosus (SLE) are believed to primarily involve inflammation and tissue damage due to immune complex deposition associated with complement activation, including C1q activation. Consequently, reports suggest that UV can coexist with autoimmune diseases such as SLE and Sjögren’s syndrome. Citation 16 Additionally, drugs, such as diltiazem, cimetidine, antibiotics, interferon, NSAIDs, and potassium iodide, have been implicated in approximately 10% of UV cases. Citation 17 Viral infections, such as hepatitis C and COVID-19, also trigger UV by activating the complement system. Citation 18 , Citation 19 Furthermore, the onset of UV sometimes precedes the development of malignancies, and it may appear as an initial symptom of malignancy. Citation 20 Cases where UV improved after surgical removal of malignancy have been reported, suggesting a potential link between UV and malignancies. Citation 21 Malignancy-associated UV tends to be resistant to various treatments, including oral corticosteroid therapy. Citation 20

Recently, vaccinations against viral or bacterial pathogens have also been found to induce UV. Citation 2–13 For example, both influenza and COVID-19 vaccinations can cause a wide variety of vasculitis, including UV. Citation 14 , Citation 22 Maronese et al reported that between 2021, when COVID-19 vaccination was introduced, and 2022, a total of 63 cases of vasculitis following COVID-19 vaccination were documented. Citation 22 This included 42 cutaneous leukocytoclastic vasculitis, 12 IgA vasculitis, 4 lymphocytic vasculitis, 4 UV, and 2 anti-neutrophil cytoplasmic antibody-associated vasculitis cases. Citation 22 In contrast, during the 40 years from 1966 to 2016, only 65 cases of vasculitis were reported following influenza vaccination. Citation 14 Comparing the two virus vaccinations, it appears that COVID-19 vaccination is more likely to induce vasculitis than influenza vaccination. Citation 14 , Citation 22

The exact mechanism underlying the development of UV following vaccination remains unclear. Citation 1 The development of vasculitis following vaccinations may be related to immune complex deposition and subsequent complement activation. Citation 23 , Citation 24 Vaccine components that share structural similarities with host proteins could trigger an inflammatory response, leading to the activation of autoreactive B/T cells and antibody formation, which in turn results in the deposition of immune complexes in cutaneous blood vessels and complement activation, ultimately causing vasculitis. Citation 23 , Citation 24

Recently, molecular mimicry has also been proposed as a factor. Segal et al considered that molecular mimicry might be the factor that induces post-vaccination autoimmune phenomena. Citation 25 This theory suggests that the notable similarities between the pathogenic elements of vaccines and specific human proteins lead to immune cross-reactivity. Citation 14 As a result, the immune system response to vaccine-derived pathogenic antigens can inadvertently target analogous human proteins, ultimately leading to the onset of various autoimmune conditions. Citation 25 UV is considered a consequence of a type III hypersensitivity reaction, in which antigen–antibody complexes are deposited in the vascular lumina, triggering complement activation and neutrophil infiltration. Citation 1 Therefore, in the present case, considering the elevated aCL levels, molecular mimicry might have produced vaccine-derived pathogenic antigen antibodies, leading to the development of UV, manifested by vascular destruction and inflammatory cellular infiltration. Differences in the degree of immune complex deposition, complement activation, and molecular mimicry among vaccines may contribute to variations in the susceptibility to vasculitis following vaccination, as seen with influenza and COVID-19 vaccines.

In this review, no significant differences were observed in the data of P-values, which may be attributed to the small number of cases. Although cases of UV following vaccination are rare, one case was severe enough to require treatment with steroid pulses due to HLH; thus, recognizing the potential for developing UV following vaccination is crucial. Accumulation of further cases and research is required to investigate the clinical course and underlying mechanisms of vaccine-induced UV.

Informed Consent Statement

Written informed consent was obtained from the patient for the publication of this paper. Approval to publish the case details was not required in our institution.

The authors declare no conflicts of interest related to this article.

Acknowledgments

We thank Editage for providing English language editing services for our manuscript.

Data Sharing Statement

All statistical data are presented in Table 1 , showing 13 examined cases. The P-values were calculated using the independent two-sample t -test. Additional data concerning this article may be requested from the corresponding author for reasonable reasons.

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