literature review project sample

15 Literature Review Examples

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Dr. Chris Drew is the founder of the Helpful Professor. He holds a PhD in education and has published over 20 articles in scholarly journals. He is the former editor of the Journal of Learning Development in Higher Education. [Image Descriptor: Photo of Chris]

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Literature reviews are a necessary step in a research process and often required when writing your research proposal . They involve gathering, analyzing, and evaluating existing knowledge about a topic in order to find gaps in the literature where future studies will be needed.

Ideally, once you have completed your literature review, you will be able to identify how your research project can build upon and extend existing knowledge in your area of study.

Generally, for my undergraduate research students, I recommend a narrative review, where themes can be generated in order for the students to develop sufficient understanding of the topic so they can build upon the themes using unique methods or novel research questions.

If you’re in the process of writing a literature review, I have developed a literature review template for you to use – it’s a huge time-saver and walks you through how to write a literature review step-by-step:

Get your time-saving templates here to write your own literature review.

Literature Review Examples

For the following types of literature review, I present an explanation and overview of the type, followed by links to some real-life literature reviews on the topics.

1. Narrative Review Examples

Also known as a traditional literature review, the narrative review provides a broad overview of the studies done on a particular topic.

It often includes both qualitative and quantitative studies and may cover a wide range of years.

The narrative review’s purpose is to identify commonalities, gaps, and contradictions in the literature .

I recommend to my students that they should gather their studies together, take notes on each study, then try to group them by themes that form the basis for the review (see my step-by-step instructions at the end of the article).

Example Study

Title: Communication in healthcare: a narrative review of the literature and practical recommendations

Citation: Vermeir, P., Vandijck, D., Degroote, S., Peleman, R., Verhaeghe, R., Mortier, E., … & Vogelaers, D. (2015). Communication in healthcare: a narrative review of the literature and practical recommendations. International journal of clinical practice , 69 (11), 1257-1267.

Source: https://onlinelibrary.wiley.com/doi/pdf/10.1111/ijcp.12686  

Overview: This narrative review analyzed themes emerging from 69 articles about communication in healthcare contexts. Five key themes were found in the literature: poor communication can lead to various negative outcomes, discontinuity of care, compromise of patient safety, patient dissatisfaction, and inefficient use of resources. After presenting the key themes, the authors recommend that practitioners need to approach healthcare communication in a more structured way, such as by ensuring there is a clear understanding of who is in charge of ensuring effective communication in clinical settings.

Other Examples

• Burnout in United States Healthcare Professionals: A Narrative Review (Reith, 2018) – read here
• Examining the Presence, Consequences, and Reduction of Implicit Bias in Health Care: A Narrative Review (Zestcott, Blair & Stone, 2016) – read here
• A Narrative Review of School-Based Physical Activity for Enhancing Cognition and Learning (Mavilidi et al., 2018) – read here
• A narrative review on burnout experienced by medical students and residents (Dyrbye & Shanafelt, 2015) – read here

2. Systematic Review Examples

This type of literature review is more structured and rigorous than a narrative review. It involves a detailed and comprehensive plan and search strategy derived from a set of specified research questions.

The key way you’d know a systematic review compared to a narrative review is in the methodology: the systematic review will likely have a very clear criteria for how the studies were collected, and clear explanations of exclusion/inclusion criteria. 

The goal is to gather the maximum amount of valid literature on the topic, filter out invalid or low-quality reviews, and minimize bias. Ideally, this will provide more reliable findings, leading to higher-quality conclusions and recommendations for further research.

You may note from the examples below that the ‘method’ sections in systematic reviews tend to be much more explicit, often noting rigid inclusion/exclusion criteria and exact keywords used in searches.

Title: The importance of food naturalness for consumers: Results of a systematic review  

Citation: Roman, S., Sánchez-Siles, L. M., & Siegrist, M. (2017). The importance of food naturalness for consumers: Results of a systematic review. Trends in food science & technology , 67 , 44-57.

Source: https://www.sciencedirect.com/science/article/pii/S092422441730122X  

Overview: This systematic review included 72 studies of food naturalness to explore trends in the literature about its importance for consumers. Keywords used in the data search included: food, naturalness, natural content, and natural ingredients. Studies were included if they examined consumers’ preference for food naturalness and contained empirical data. The authors found that the literature lacks clarity about how naturalness is defined and measured, but also found that food consumption is significantly influenced by perceived naturalness of goods.

• A systematic review of research on online teaching and learning from 2009 to 2018 (Martin, Sun & Westine, 2020) – read here
• Where Is Current Research on Blockchain Technology? (Yli-Huumo et al., 2016) – read here
• Universities—industry collaboration: A systematic review (Ankrah & Al-Tabbaa, 2015) – read here
• Internet of Things Applications: A Systematic Review (Asghari, Rahmani & Javadi, 2019) – read here

3. Meta-analysis

This is a type of systematic review that uses statistical methods to combine and summarize the results of several studies.

Due to its robust methodology, a meta-analysis is often considered the ‘gold standard’ of secondary research , as it provides a more precise estimate of a treatment effect than any individual study contributing to the pooled analysis.

Furthermore, by aggregating data from a range of studies, a meta-analysis can identify patterns, disagreements, or other interesting relationships that may have been hidden in individual studies.

This helps to enhance the generalizability of findings, making the conclusions drawn from a meta-analysis particularly powerful and informative for policy and practice.

Title: Cholesterol and Alzheimer’s Disease Risk: A Meta-Meta-Analysis

Citation: Sáiz-Vazquez, O., Puente-Martínez, A., Ubillos-Landa, S., Pacheco-Bonrostro, J., & Santabárbara, J. (2020). Cholesterol and Alzheimer’s disease risk: a meta-meta-analysis. Brain sciences, 10(6), 386.

Source: https://doi.org/10.3390/brainsci10060386  

O verview: This study examines the relationship between cholesterol and Alzheimer’s disease (AD). Researchers conducted a systematic search of meta-analyses and reviewed several databases, collecting 100 primary studies and five meta-analyses to analyze the connection between cholesterol and Alzheimer’s disease. They find that the literature compellingly demonstrates that low-density lipoprotein cholesterol (LDL-C) levels significantly influence the development of Alzheimer’s disease.

• The power of feedback revisited: A meta-analysis of educational feedback research (Wisniewski, Zierer & Hattie, 2020) – read here
• How Much Does Education Improve Intelligence? A Meta-Analysis (Ritchie & Tucker-Drob, 2018) – read here
• A meta-analysis of factors related to recycling (Geiger et al., 2019) – read here
• Stress management interventions for police officers and recruits (Patterson, Chung & Swan, 2014) – read here

Other Types of Reviews

• Scoping Review: This type of review is used to map the key concepts underpinning a research area and the main sources and types of evidence available. It can be undertaken as stand-alone projects in their own right, or as a precursor to a systematic review.
• Rapid Review: This type of review accelerates the systematic review process in order to produce information in a timely manner. This is achieved by simplifying or omitting stages of the systematic review process.
• Integrative Review: This review method is more inclusive than others, allowing for the simultaneous inclusion of experimental and non-experimental research. The goal is to more comprehensively understand a particular phenomenon.
• Critical Review: This is similar to a narrative review but requires a robust understanding of both the subject and the existing literature. In a critical review, the reviewer not only summarizes the existing literature, but also evaluates its strengths and weaknesses. This is common in the social sciences and humanities .
• State-of-the-Art Review: This considers the current level of advancement in a field or topic and makes recommendations for future research directions. This type of review is common in technological and scientific fields but can be applied to any discipline.

How to Write a Narrative Review (Tips for Undergrad Students)

Most undergraduate students conducting a capstone research project will be writing narrative reviews. Below is a five-step process for conducting a simple review of the literature for your project.

• Search for Relevant Literature: Use scholarly databases related to your field of study, provided by your university library, along with appropriate search terms to identify key scholarly articles that have been published on your topic.
• Evaluate and Select Sources: Filter the source list by selecting studies that are directly relevant and of sufficient quality, considering factors like credibility , objectivity, accuracy, and validity.
• Analyze and Synthesize: Review each source and summarize the main arguments  in one paragraph (or more, for postgrad). Keep these summaries in a table.
• Identify Themes: With all studies summarized, group studies that share common themes, such as studies that have similar findings or methodologies.
• Write the Review: Write your review based upon the themes or subtopics you have identified. Give a thorough overview of each theme, integrating source data, and conclude with a summary of the current state of knowledge then suggestions for future research based upon your evaluation of what is lacking in the literature.

Literature reviews don’t have to be as scary as they seem. Yes, they are difficult and require a strong degree of comprehension of academic studies. But it can be feasibly done through following a structured approach to data collection and analysis. With my undergraduate research students (who tend to conduct small-scale qualitative studies ), I encourage them to conduct a narrative literature review whereby they can identify key themes in the literature. Within each theme, students can critique key studies and their strengths and limitations , in order to get a lay of the land and come to a point where they can identify ways to contribute new insights to the existing academic conversation on their topic.

Ankrah, S., & Omar, A. T. (2015). Universities–industry collaboration: A systematic review. Scandinavian Journal of Management, 31(3), 387-408.

Asghari, P., Rahmani, A. M., & Javadi, H. H. S. (2019). Internet of Things applications: A systematic review. Computer Networks , 148 , 241-261.

Dyrbye, L., & Shanafelt, T. (2016). A narrative review on burnout experienced by medical students and residents. Medical education , 50 (1), 132-149.

Geiger, J. L., Steg, L., Van Der Werff, E., & Ünal, A. B. (2019). A meta-analysis of factors related to recycling. Journal of environmental psychology , 64 , 78-97.

Martin, F., Sun, T., & Westine, C. D. (2020). A systematic review of research on online teaching and learning from 2009 to 2018. Computers & education , 159 , 104009.

Mavilidi, M. F., Ruiter, M., Schmidt, M., Okely, A. D., Loyens, S., Chandler, P., & Paas, F. (2018). A narrative review of school-based physical activity for enhancing cognition and learning: The importance of relevancy and integration. Frontiers in psychology , 2079.

Patterson, G. T., Chung, I. W., & Swan, P. W. (2014). Stress management interventions for police officers and recruits: A meta-analysis. Journal of experimental criminology , 10 , 487-513.

Reith, T. P. (2018). Burnout in United States healthcare professionals: a narrative review. Cureus , 10 (12).

Ritchie, S. J., & Tucker-Drob, E. M. (2018). How much does education improve intelligence? A meta-analysis. Psychological science , 29 (8), 1358-1369.

Roman, S., Sánchez-Siles, L. M., & Siegrist, M. (2017). The importance of food naturalness for consumers: Results of a systematic review. Trends in food science & technology , 67 , 44-57.

Sáiz-Vazquez, O., Puente-Martínez, A., Ubillos-Landa, S., Pacheco-Bonrostro, J., & Santabárbara, J. (2020). Cholesterol and Alzheimer’s disease risk: a meta-meta-analysis. Brain sciences, 10(6), 386.

Vermeir, P., Vandijck, D., Degroote, S., Peleman, R., Verhaeghe, R., Mortier, E., … & Vogelaers, D. (2015). Communication in healthcare: a narrative review of the literature and practical recommendations. International journal of clinical practice , 69 (11), 1257-1267.

Wisniewski, B., Zierer, K., & Hattie, J. (2020). The power of feedback revisited: A meta-analysis of educational feedback research. Frontiers in Psychology , 10 , 3087.

Yli-Huumo, J., Ko, D., Choi, S., Park, S., & Smolander, K. (2016). Where is current research on blockchain technology?—a systematic review. PloS one , 11 (10), e0163477.

Zestcott, C. A., Blair, I. V., & Stone, J. (2016). Examining the presence, consequences, and reduction of implicit bias in health care: a narrative review. Group Processes & Intergroup Relations , 19 (4), 528-542

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Literature Review: Conducting & Writing

• Sample Literature Reviews
• Steps for Conducting a Lit Review
• Finding "The Literature"
• Organizing/Writing
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Sample Lit Reviews from Communication Arts

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Note: These are sample literature reviews from a class that were given to us by an instructor when APA 6th edition was still in effect. These were excellent papers from her class, but it does not mean they are perfect or contain no errors. Thanks to the students who let us post!

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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.

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. 

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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. 

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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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Top 20 Literature Review Examples

Struggling with writing a literature review? Our guide provides multiple examples of literature reviews across different fields to help you understand the structure and nuances of this crucial component of research.

If you’re new to academic writing, you may find the idea of writing a literature review daunting. A literature review is a critical component of most research papers, theses, and dissertations. It involves summarizing, analyzing, and synthesizing existing research to provide a foundation for your own work. To help you understand this process better, we've compiled multiple examples of literature reviews from different fields and contexts. This guide will not only show you what a literature review looks like but will also provide tips for writing your own.

What Is a Literature Review?

A literature review is a comprehensive overview of the existing research on a particular topic. It typically surveys scholarly articles, books, and other credible sources to identify gaps, trends, and key arguments in the field. The purpose of a literature review is to demonstrate your understanding of the topic and to position your own research within the context of existing scholarship. Unlike a simple summary, a literature review provides critical analysis, demonstrates relationships between works, and often identifies areas for future research.

A good literature review not only synthesizes current research but also provides a critical framework that justifies the necessity of your research project. It’s about engaging deeply with the literature to show that you understand the complexities and nuances of your field. This engagement helps lay a solid foundation for your research objectives, creating a context that supports your hypothesis or research questions.

Why Are Literature Reviews Important?

Literature reviews are crucial because they provide context for your own research, showing where it fits within the existing body of knowledge. They help identify what has already been discovered, what questions remain unanswered, and how your research can contribute to the field. By synthesizing previous work, you lay the groundwork for the originality and significance of your own study.

Moreover, a literature review helps to establish credibility. It demonstrates that you are well-versed in the relevant literature and that you are capable of understanding and analyzing existing research critically. This is particularly important for convincing your audience—whether they are your professors, peers, or other researchers—of the validity and value of your work. A well-constructed literature review highlights your scholarly diligence and sets the stage for your contribution to the ongoing academic conversation.

Example 1: Literature Review in Psychology

Consider a literature review for a research paper on the impact of mindfulness on reducing anxiety. In this example, the author starts by summarizing foundational research on mindfulness practices, citing key studies that show how mindfulness reduces stress. Then, they move on to analyze recent findings that specifically target anxiety disorders. The author identifies a gap in the research: while there are numerous studies on general stress reduction, fewer studies focus on mindfulness and its impact on different types of anxiety. This literature review effectively highlights both well-established findings and areas where further research is needed.

The author also categorizes the literature into themes—mindfulness as a general wellness practice versus mindfulness targeted specifically at clinical anxiety. This thematic organization helps readers quickly understand the nuances between different applications of mindfulness. Furthermore, the author discusses methodological differences between studies, such as sample size and duration of mindfulness interventions, which adds depth to the analysis and provides a more rounded understanding of the current research landscape.

Example 2: Literature Review in Business Management

A literature review in business management might focus on leadership styles and their impact on employee productivity. The author begins by outlining different leadership theories such as transformational, transactional, and servant leadership. The review then examines existing studies that link these leadership styles to employee satisfaction and productivity metrics. A critical analysis is provided, suggesting that while transformational leadership is often associated with high productivity, there is still debate about its effectiveness across different cultural contexts. The author uses this debate as a basis for proposing their own research question, which seeks to explore the relationship between leadership styles and employee productivity in non-Western countries.

In addition, the author includes a subsection on leadership styles in the digital age, discussing how virtual teams and remote work environments challenge traditional leadership paradigms. This perspective helps highlight the evolving nature of leadership and adds an extra layer of relevance by connecting classical leadership theories to modern organizational challenges. The author also identifies inconsistencies in the literature, such as conflicting findings regarding which style is most effective in high-stress environments, thus setting up the importance of further research.

Example 3: Literature Review in Medicine

For a literature review in the field of medicine, let’s look at a study focused on the effectiveness of telemedicine in rural healthcare settings. The author summarizes existing literature on telemedicine, including studies that highlight its benefits—such as increased access to healthcare and cost efficiency. The review also presents findings that discuss the challenges of telemedicine, such as technology barriers and privacy concerns. The author synthesizes these perspectives to demonstrate that while telemedicine offers promise for rural healthcare, further studies are needed to understand its long-term impact on patient outcomes. This literature review is structured to identify both the strengths and challenges in current research, setting the stage for further exploration.

Additionally, the author discusses the role of policy and government initiatives in supporting telemedicine, providing context on how regulations affect the adoption and efficacy of telemedicine practices. By incorporating this broader socio-political context, the author adds depth to the analysis, emphasizing that the success of telemedicine is not just about technology but also about institutional and regulatory frameworks. The literature review ends with a section on future research directions, suggesting that longitudinal studies are necessary to assess patient outcomes over extended periods, which is a critical gap identified in the current body of research.

Example 4: Literature Review in Education

In an education-based literature review, the focus might be on the impact of technology in the classroom. The author starts by covering historical perspectives on educational technology, then moves on to discuss the evolution of tools like smartboards, learning management systems, and tablets. A significant part of the review involves analyzing the effectiveness of these technologies on student learning outcomes. The author contrasts studies that show positive results with those that point out limitations, such as reduced social interaction and technology dependence. By presenting both sides, the author provides a balanced view, ultimately highlighting the need for more nuanced research into the types of technology that contribute most effectively to different learning environments.

The author also categorizes the literature by age groups—examining the impact of technology in early childhood education, primary school, and higher education. This breakdown allows for a more targeted analysis, as the impact of technology can vary significantly depending on the developmental stage of the students. The author also integrates perspectives from educators, students, and parents, providing a comprehensive look at how different stakeholders view educational technology, thereby enriching the analysis and pointing out areas for further inquiry.

Example 5: Literature Review in Environmental Science

A literature review in environmental science might explore the impact of climate change on coastal ecosystems. The author begins by summarizing foundational studies on climate change, highlighting the major effects on sea levels and temperature changes. Then, they analyze specific studies focusing on coastal regions, pointing out the increased frequency of extreme weather events and their consequences on marine biodiversity. The author categorizes the studies into subtopics such as coral reef degradation, changes in fish populations, and the socio-economic impacts on coastal communities. The literature review emphasizes the importance of both mitigation and adaptation strategies and calls for more research into localized solutions to climate impacts.

Example 6: Literature Review in Sociology

In sociology, a literature review might examine the relationship between social media use and mental health among teenagers. The author starts by summarizing studies that explore different aspects of social media, including both its positive impacts (e.g., social connectedness) and negative outcomes (e.g., anxiety and depression). The review synthesizes findings by categorizing studies into those that focus on frequency of use, type of content consumed, and peer interactions. The author critically discusses conflicting results—some studies show positive social outcomes, while others link heavy social media use to increased feelings of loneliness. By highlighting these inconsistencies, the author sets up a strong case for their research question, which seeks to clarify under what conditions social media has a positive or negative impact.

Example 7: Literature Review in Political Science

A literature review in political science could focus on the effectiveness of international sanctions. The author starts by discussing the historical context of sanctions, reviewing examples from major international conflicts. The literature is then organized by theme, such as economic sanctions, diplomatic sanctions, and their impact on civilian populations. The author identifies the challenges of measuring the effectiveness of sanctions due to political biases and varying methodologies. The review points out that while sanctions can pressure governments, they often have unintended consequences for ordinary citizens, leading to a discussion on the ethical implications. The author uses this to propose further research into alternative diplomatic tools.

Example 8: Literature Review in Public Health

In public health, a literature review might examine the effectiveness of vaccination campaigns in increasing immunization rates in underserved populations. The author begins by summarizing foundational public health theories related to immunization and community health. They then present studies on specific vaccination campaigns, noting differences in approaches such as door-to-door outreach versus community center initiatives. The review also considers barriers like vaccine misinformation, accessibility issues, and socio-cultural resistance. The author identifies successful strategies, such as involving local community leaders, and suggests areas for further research, including the role of digital platforms in spreading accurate health information.

Example 9: Literature Review in Economics

A literature review in economics might explore the concept of universal basic income (UBI) and its potential impact on poverty alleviation. The author starts by summarizing theoretical frameworks behind UBI, including Keynesian and libertarian perspectives. Then, they evaluate empirical studies from different countries that have piloted UBI programs, such as Finland and Kenya. The review highlights the positive outcomes, such as reduced financial stress and increased entrepreneurship, but also addresses concerns about inflation and work disincentives. The author identifies a gap in the literature regarding the long-term socio-economic effects of UBI and suggests that further longitudinal studies are needed.

Example 10: Literature Review in Engineering

In an engineering context, a literature review might focus on advancements in renewable energy storage solutions. The author reviews various technologies, such as lithium-ion batteries, hydrogen fuel cells, and thermal storage. Each section provides an overview of the technology, its current applications, and challenges. The author also compares the efficiency and scalability of each solution, pointing out the trade-offs in terms of cost, safety, and environmental impact. By highlighting the need for improved energy storage to support renewable power grids, the author makes a case for future research into hybrid storage systems that combine the strengths of multiple technologies.

Example 11: Literature Review in Anthropology

A literature review in anthropology might investigate the cultural implications of globalization on indigenous communities. The author begins by reviewing early theories of globalization and their predicted effects on cultural identity. Then, they present specific case studies from various regions, such as the Amazon and Southeast Asia, to illustrate the real-world impact on traditional practices and languages. The review highlights both the resilience of certain communities and the challenges they face, such as loss of land and cultural commodification. The author concludes by calling for more participatory research methods that involve indigenous voices directly.

Example 12: Literature Review in Linguistics

In a linguistics literature review, the focus might be on language acquisition in bilingual children. The author summarizes foundational research in language development theories, such as Chomsky's theory of innate grammar versus behaviorist models. They then present recent studies that examine how bilingual children navigate multiple languages at home and in school settings. The author highlights differences in cognitive development, social factors, and the effects of simultaneous versus sequential bilingualism. This review points out gaps in the research, particularly the need for longitudinal studies to understand long-term academic outcomes for bilingual children.

Example 13: Literature Review in Environmental Policy

A literature review in environmental policy could focus on carbon pricing mechanisms as a tool for reducing greenhouse gas emissions. The author begins by reviewing economic theories related to carbon taxes and cap-and-trade systems. They then analyze real-world examples, such as carbon pricing initiatives in the European Union and British Columbia. The review discusses both successes and challenges, including economic impacts on industries and the effectiveness in reducing emissions. The author suggests that future research should explore hybrid models that combine regulatory and market-based approaches to improve policy outcomes.

Example 14: Literature Review in Computer Science

In computer science, a literature review might explore the evolution of machine learning algorithms for natural language processing (NLP). The author starts by summarizing the development of early NLP models, such as rule-based systems, and transitions into modern deep learning approaches. The review categorizes algorithms into supervised, unsupervised, and reinforcement learning methods, analyzing their respective advantages and limitations. The author also addresses ethical concerns regarding biases in language models and calls for more research into fair and transparent AI development practices.

Example 15: Literature Review in Urban Studies

A literature review in urban studies might explore the phenomenon of urban gentrification and its impact on local communities. The author begins by providing a historical overview of gentrification and reviewing early theoretical frameworks, such as rent gap theory. Then, they present case studies from cities like New York, London, and Berlin to highlight the social and economic effects on displaced residents. The author contrasts perspectives that see gentrification as a driver of economic revitalization with those that view it as a source of inequality. The review concludes by identifying a need for more community-centered research to understand the long-term social implications of urban redevelopment.

Example 16: Literature Review in Philosophy

A literature review in philosophy could focus on ethical theories related to artificial intelligence. The author begins by outlining classical ethical frameworks, such as utilitarianism, deontology, and virtue ethics, and discusses how these theories apply to AI. The review then examines contemporary debates, such as the moral implications of autonomous decision-making and the responsibilities of AI developers. By exploring both philosophical arguments and practical considerations, the author highlights gaps in current ethical guidelines and calls for interdisciplinary research to address the unique challenges posed by AI.

Example 17: Literature Review in Criminal Justice

A literature review in criminal justice could focus on the effectiveness of rehabilitation programs for reducing recidivism among offenders. The author begins by presenting an overview of different rehabilitation strategies, such as cognitive-behavioral therapy (CBT), vocational training, and restorative justice programs. The review categorizes studies by the type of offender, such as juvenile versus adult, and discusses the varying success rates. The author identifies a gap in longitudinal studies examining the long-term success of rehabilitation, proposing future research to explore how these programs impact offenders years after release.

Example 18: Literature Review in Nutrition Science

A literature review in nutrition science might examine the role of plant-based diets in preventing chronic diseases. The author starts by summarizing foundational research on the health benefits of plant-based eating, such as reduced risks of heart disease, diabetes, and certain cancers. The review then discusses recent studies comparing plant-based diets to omnivorous diets in terms of nutrient intake and overall health outcomes. The author highlights methodological variations, such as differences in dietary definitions, and suggests further research into the role of supplementation in plant-based diets to ensure nutritional adequacy.

Example 19: Literature Review in Marketing

A literature review in marketing might explore the impact of influencer endorsements on consumer purchasing behavior. The author begins by reviewing early studies on celebrity endorsements and their influence on brand perception. The review then transitions to modern social media influencers, comparing their effectiveness to that of traditional celebrities. The author categorizes studies based on different factors, such as the type of product, audience demographics, and platform used. The review points out a gap in the literature related to the ethical implications of influencer marketing, suggesting further research into transparency and consumer trust.

Example 20: Literature Review in History

In a history-based literature review, the focus could be on the causes of the Industrial Revolution. The author starts by reviewing various theories, including economic, technological, and cultural explanations. The literature is organized by different schools of thought, such as Marxist interpretations, which emphasize economic factors, versus cultural historians who focus on shifts in societal values. The author also presents case studies from different countries, comparing how the Industrial Revolution unfolded in Britain, France, and Germany. This comparative analysis reveals inconsistencies in existing theories and suggests a need for a more integrated approach to understanding the multiple causes of this transformative period.

Tips for Writing Your Own Literature Review

• Define Your Scope : Clearly define the scope of your literature review. What are you trying to cover, and what are the boundaries of your topic? Be specific to avoid overwhelming yourself with too much material.
• Organize by Theme : Instead of summarizing each source chronologically, group your literature by themes or trends. This helps to create a more cohesive narrative and makes it easier for readers to follow your argument.
• Synthesize, Don’t Summarize : Go beyond simply summarizing the studies—synthesize them by comparing, contrasting, and connecting different sources. Show how the research interacts, where it agrees, and where it diverges.
• Highlight Gaps : Identify areas where more research is needed. This shows your understanding of the field and justifies your own research. Pointing out gaps also demonstrates that your research has a unique contribution to make.
• Use Credible Sources : Always use reputable academic sources, such as peer-reviewed journal articles, books by experts in the field, and official reports. Credible sources strengthen your argument and add validity to your review.
• Be Critical, Not Just Descriptive : A good literature review involves critical analysis. Question methodologies, identify biases, and evaluate the strengths and weaknesses of each study. This critical approach will make your review more engaging and informative.
• Keep It Organized : Use headings and subheadings to keep your literature review well-structured. A well-organized review is easier to follow and helps emphasize the relationships between different pieces of literature.
• Take Notes and Summarize Key Points : During the research phase, make detailed notes and summarize the key findings of each source. This will make it easier to identify connections and gaps in the literature when you start writing.
• Use Direct Quotes Sparingly : While quoting sources can be effective, use direct quotes sparingly. Instead, paraphrase the content and provide your interpretation or analysis. This will make your literature review more original and will better showcase your understanding of the material.
• Incorporate Contrasting Perspectives : Including differing viewpoints makes your literature review more comprehensive. When appropriate, address contrasting theories or studies that challenge your own perspective. Analyzing these opposing views will add depth to your review and demonstrate critical thinking.
• Establish Relationships Between Studies : Highlight connections between studies by showing how one piece of research builds on or refines another. This helps create a storyline for your literature review and illustrates the development of knowledge within your topic.
• Limit Scope Creep : It's easy to get sidetracked while researching. Stay focused on your specific research questions and avoid expanding your scope too broadly. Limiting scope creep ensures that your literature review remains concise and coherent.
• Summarize Each Section : At the end of each major section, provide a brief summary that ties together the points you’ve discussed. This will help to reinforce the main themes and make it easier for readers to follow your overall argument.
• Use Visual Aids Where Applicable : If possible, include tables, charts, or concept maps to organize and summarize key findings visually. This can make your literature review more engaging and help convey complex relationships more clearly.
• Revise and Edit Thoroughly : Writing a literature review is an iterative process. After your first draft, revisit your review to refine the flow, strengthen connections, and improve clarity. Pay attention to consistency in your writing style and ensure that each section logically builds on the previous one.

Final Thoughts

A well-written literature review is more than just a summary of existing work—it’s a critical analysis that provides context for your research and helps position it within the broader academic landscape. By examining these examples and understanding how they are structured, you can gain valuable insights into how to write a literature review that is both informative and engaging. Remember, the key is to create a narrative that ties together different pieces of research while demonstrating your unique contribution to the topic.

Whether you are writing a literature review in psychology, business, medicine, or education, these examples should give you a solid foundation. The more practice you get in analyzing and synthesizing existing research, the better equipped you will be to produce high-quality academic work. Always aim for depth, critical engagement, and clarity, as these elements will make your literature review a strong backbone for your research.

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