psychology literature review example

Writing a Literature Review

What is a literature review.

• Research Topic | Research Questions
• Outline (Example)
• What Types of Literature Should I Use in My Review?
• Project Planner: Literature Review
• Writing a Literature Review in Psychology
• Literature Review tips (video)

Table of Contents

• What is a literature review?
• How is a literature review different from a research article?
• The two purposes: describe/compare and evaluate
• Getting started Select a topic and gather articles
• Choose a current, well-studied, specific topic
• Search the research literature
• Read the articles
• Write the literature review
• Structure How to proceed: describe, compare, evaluate

Literature reviews survey research on a particular area or topic in psychology. Their main purpose is to knit together theories and results from multiple studies to give an overview of a field of research.

How is a Literature Review Different from a Research Article?

Research articles:

• are empirical articles that describe one or several related studies on a specific, quantitative, testable research question
• are typically organized into four text sections: Introduction, Methods, Results, Discussion

The Introduction of a research article includes a condensed literature review. Its purpose is to describe what is known about the area of study, with the goal of giving the context and rationale for the study itself. Published literature reviews are called review articles. Review articles emphasize interpretation. By surveying the key studies done in a certain research area, a review article interprets how each line of research supports or fails to support a theory. Unlike a research article, which is quite specific, a review article tells a more general story of an area of research by describing, comparing, and evaluating the key theories and main evidence in that area.

The Two Purposes of a Literature Review

Your review has two purposes:

(1) to describe and compare studies in a specific area of research and

(2) to evaluate those studies. Both purposes are vital: a thorough summary and comparison of the current research is necessary before you can build a strong evaluative argument about the theories tested.

Getting Started

(1) Select a research topic and identify relevant articles.

(2) Read the articles until you understand what about them is relevant to your review.

(3) Digest the articles: Understand the main points well enough to talk about them.

(4) Write the review, keeping in mind your two purposes: to describe and compare, and to evaluate.

SELECT A TOPIC AND COLLECT ARTICLES

Choose a current, well-studied, specific topic.

Pick a topic that interests you. If you're interested in a subject, you're likely to already know something about it. Your interest will help you to choose meaningful articles, making your paper more fun both to write and to read. The topic should be both current and well studied. Your goal is to describe and evaluate recent findings in a specific area of research, so pick a topic that you find in current research journals. Find an area that is well defined and well studied, meaning that several research groups are studying the topic and have approached it from different perspectives. If all the articles you find are from the same research group (i.e., the same authors), broaden your topic or use more general search terms.

You may need to narrow your topic. The subject of a short literature review must be specific enough, yet have sufficient literature on the subject, for you to cover it in depth. A broad topic will yield thousands of articles, which is impossible to survey meaningfully. If you are drowning in articles, or each article you find seems to be about a completely different aspect of the subject, narrow your topic. Choose one article that interests to you and focus on the specific question investigated. For example, a search for ‘teenage alcohol use’ will flood you with articles, but searching for ‘teenage alcohol use and criminal behavior’ will yield both fewer and more focused articles.

You may need to broaden your topic. You need enough articles on your topic for a thorough review of the research. If you’re unable to find much literature on your topic, or if you find articles you want that are not easy to find online, broaden your topic. What’s a more general way to ask your question of interest? For example, if you’re having a hard time finding articles on ‘discrimination against Asian-American women in STEM fields,’ broaden your topic (e.g., ‘academic discrimination against Asian-American women’ or ‘discrimination against women in STEM.’)

Consider several topics, and keep an open mind. Don't fall in love with a topic before you find how much research has been done in that area. By exploring different topics, you may discover something that is newly exciting to you!

Search the Research Literature

Do a preliminary search. Use online databases to search the research literature. If you don’t know how to search online databases, ask your instructor or reference librarian. Reference librarians are invaluable!

Search for helpful articles. Find one or more pivotal articles that can be a foundation for your paper. A pivotal article may be exceptionally well written, contain particularly valuable citations, or clarify relationships between different but related lines of research. Two sources of such articles in psychology are:

• Psychological Bulletin •
• Current Directions in Psychological Science (published by the American Psychological Society) has general, short articles written by scientists who have published a lot in their research area

How many articles? Although published review articles may cite more than 100 articles, literature reviews for courses are often shorter because they present only highlights of a research area and are not exhaustive. A short literature review may survey 7-12 research articles and be about 10-15 pages long. For course paper guidelines, ask your instructor.

Choose representative articles, not just the first ones you find. This consideration is more important than the length of your review.

Choose readable articles. Some research areas are harder to understand than others. Scan articles in the topic areas you are considering to decide on the readability of the research in those areas.

READ THE ARTICLES

To write an effective review, you’ll need a solid grasp of the relevant research. Begin by reading the article you find easiest. Read, re-read, and mentally digest it until you have a conversational understanding of the paper. You don’t know what you know until you can talk about it. And if you can’t talk about it, you won’t be able to write about it.

Read selectively. Don't start by reading the articles from beginning to end. First, read just the Abstract to get an overview of the study.

Scan the article to identify the answers to these “Why-What-What-What” questions:

• Why did they do the study? Why does it matter?
• What did they do?
• What did they find?
• What does it mean?

The previous four questions correspond to these parts of a research article:

• Introduction: the research question and hypotheses

Create a summary sheet of each article’s key points. This will help you to integrate each article into your paper.

TIP: Give Scholarcy a try.

Read for depth. After you understand an article’s main points, read each section in detail for to gain the necessary indepth understanding to compare the work of different researchers.

WRITE THE LITERATURE REVIEW

Your goal is to evaluate a body of literature; i.e., to “identify relations, contradictions, gaps, and inconsistencies” and “suggest next steps to solve the research problem” (APA Publication Manual 2010, p. 10). Begin writing when you have decided on your story and how to organize your research to support that story.

Organization

Organize the literature review to highlight the theme that you want to emphasize – the story that you want to tell. Literature reviews tend to be organized something like this:

Introduction:

• Introduce the research topic (what it is, why does it matter)
• Frame the story: narrow the research topic to the studies you will discuss
• Briefly outline how you have organized the review
• Headings. Use theme headings to organize your argument (see below)
• Describe the relevant parts of each study and explain why it is relevant to the subtopic at hand.
• Compare the studies if need be, to discuss their implications (i.e., your interpretation of what the studies show and whether there are important differences or similarities)
• Evaluate the importance of each study or group of studies, as well as the implications for the subtopic, and where research should go from here (on the level of the subtopic)

Conclusion: Final evaluation, summation and conclusion

Headings. Use headings to identify major sections that show the organization of the paper. (Headings also help you to identify organizational problems while you’re writing.) Avoid the standard headings of research articles (Introduction, Method, Results, Discussion). Use specific, conceptual headings. If you are reviewing whether facial expressions are universally understood, headings might include Studies in Western Cultures and Studies in Non-Western Cultures. Organize your argument into topics that fit under each heading (one or more per heading).

Describe. For each section or subtopic, briefly describe each article or line of research. Avoid sudden jumps betewen broader and narrower ideas. Keep your story in mind to help keep your thoughts connected.

Compare. For each section or topic, compare related studies, if this is relevant to your story. Comparisons may involve the research question, hypotheses, methods, data analysis, results, or conclusions. However, you don’t want to compare everything. That wouldn’t be a story! Which parts are relevant? What evidence supports your arguments? Identifying strengths and weaknesses of each study will help you make meaningful comparisons.

If you're having trouble synthesizing information, you probably don't understand the articles well. Reread sections you don’t understand. Discuss the studies with someone: you don’t know what you know until you can talk about it.

Evaluate. Descriptions/comparisons alone are not illuminating. For each section or topic, evaluate the studies you have reviewed based on your comparisons. Tell your reader what you conclude, and why. Evaluating research is the most subjective part of your paper. Even so, always support your claims with evidence. Evaluation requires much thought and takes on some risk, but without it, your paper is just a book report.

Final evaluation and summation. On a broader scale, relating to your main theme, tell your reader what you conclude and why. Reiterate your main claims and outline the evidence that supports them.

Conclusion. How does your evaluatio change or add to current knowledge in the field field? What future studies are implied by your analysis? How would such studies add to current knowledge of the topic?

The purpose of a literature review is to survey, describe, compare, and evaluate research articles on a particular topic. Choose a current topic that is neither too broad nor too narrow. Find the story that you want to tell. Spend a lot of time reading and thinking before you write. Think critically about the main hypotheses, findings, and arguments in a line of research. Identify areas of agreement among different articles as well as their differences and areas for future study. Expect to revise your review many times to refine your story. A well-written literature review gives the reader a comprehensive understanding of the main findings and remaining questions brought about by research on that topic.

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Psychology - How to Write a Literature Review

Subject guide.

What is a literature review? 

A literature review discusses published research studies on a specific topic or subject area.  

What is the purpose of writing it?

The goal of the lit review is to describe, summarize, and evaluate previous research in a given area.  It should explain important conclusions about your topic as well as identify any gaps in the research or areas for future study.

Choose a Topic and Find Articles

Choose a topic that interests you and remember to keep an open mind.  Depending on how much research there is, you may need to narrow or broaden your topic.  

• PsycArticles This link opens in a new window Scholarly journal articles on psychology topics.
• ProQuest Central This link opens in a new window The largest single periodical resource available, bringing together complete databases across all major subject areas, including Business, Health and Medical, Social Sciences, Education, Science and Technology, and Humanities.
• Google Scholar Search for scholarly articles and books. Be aware that the full text may not always be available.

Read the Articles

You want to read and understand each of your articles.  A good starting point is to answer these 3 questions about each article:

1. What was the study's research question?  In other words, what were they trying to find out?

2. What was the study's method?  Briefly describe HOW they collected data and WHO their participant group was.

3. What do the results mean?  Or what conclusions can we draw from the results?

Write the Lit Review

Connect:   Think about what YOUR research question is for your lit review.  Each article you found should connect to your topic/theme in some way and you should be able to describe your topic as a research question and your articles as answers to that question.  Your summary for each article should show how they further our knowledge in relation to your topic.

Organize:   Can you organize your articles into a few distinct groups?  It could be by treatment method or age/ethnic group or other factor.  The way you organize will depend on your topic and the research, but it will help you if you can group articles in some way.  

Analyze:  Think beyond just summary and about what we still don't know about this topic.  Are there gaps in the research?  Do too many studies use just one method of gathering data?  What else is important to know?  The "Discussion" section of your articles may help guide you in your analysis.

Additional Sources

• College Drinking Games Literature Review Lit Review published in a scholarly journal. Good example of how lit reviews work in the field.
• How to Write a Literature Review from Psychology in Action Good advice on choosing a topic and searching for articles.
• Writing a Literature Review in Psychology from University of Washington Helpful info on all aspects of writing a lit review. Great resource.
• Literature Reviews from UNC Chapel Hill Writing Center This is not specific to Psychology, but has good tips on organizing your paper.
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What is a Literature Review?

Description.

A literature review, also called a review article or review of literature, surveys the existing research on a topic. The term "literature" in this context refers to published research or scholarship in a particular discipline, rather than "fiction" (like American Literature) or an individual work of literature. In general, literature reviews are most common in the sciences and social sciences.

Literature reviews may be written as standalone works, or as part of a scholarly article or research paper. In either case, the purpose of the review is to summarize and synthesize the key scholarly work that has already been done on the topic at hand. The literature review may also include some analysis and interpretation. A literature review is  not  a summary of every piece of scholarly research on a topic.

Why are literature reviews useful?

Literature reviews can be very helpful for newer researchers or those unfamiliar with a field by synthesizing the existing research on a given topic, providing the reader with connections and relationships among previous scholarship. Reviews can also be useful to veteran researchers by identifying potentials gaps in the research or steering future research questions toward unexplored areas. If a literature review is part of a scholarly article, it should include an explanation of how the current article adds to the conversation. (From: https://researchguides.drake.edu/englit/criticism)

How is a literature review different from a research article?

Research articles: "are empirical articles that describe one or several related studies on a specific, quantitative, testable research question....they are typically organized into four text sections: Introduction, Methods, Results, Discussion." Source: https://psych.uw.edu/storage/writing_center/litrev.pdf)

Steps for Writing a Literature Review

1. Identify and define the topic that you will be reviewing.

The topic, which is commonly a research question (or problem) of some kind, needs to be identified and defined as clearly as possible.  You need to have an idea of what you will be reviewing in order to effectively search for references and to write a coherent summary of the research on it.  At this stage it can be helpful to write down a description of the research question, area, or topic that you will be reviewing, as well as to identify any keywords that you will be using to search for relevant research.

2. Conduct a Literature Search

Use a range of keywords to search databases such as PsycINFO and any others that may contain relevant articles.  You should focus on peer-reviewed, scholarly articles . In SuperSearch and most databases, you may find it helpful to select the Advanced Search mode and include "literature review" or "review of the literature" in addition to your other search terms.  Published books may also be helpful, but keep in mind that peer-reviewed articles are widely considered to be the “gold standard” of scientific research.  Read through titles and abstracts, select and obtain articles (that is, download, copy, or print them out), and save your searches as needed. Most of the databases you will need are linked to from the Cowles Library Psychology Research guide .

3. Read through the research that you have found and take notes.

Absorb as much information as you can.  Read through the articles and books that you have found, and as you do, take notes.  The notes should include anything that will be helpful in advancing your own thinking about the topic and in helping you write the literature review (such as key points, ideas, or even page numbers that index key information).  Some references may turn out to be more helpful than others; you may notice patterns or striking contrasts between different sources; and some sources may refer to yet other sources of potential interest.  This is often the most time-consuming part of the review process.  However, it is also where you get to learn about the topic in great detail. You may want to use a Citation Manager to help you keep track of the citations you have found. 

4. Organize your notes and thoughts; create an outline.

At this stage, you are close to writing the review itself.  However, it is often helpful to first reflect on all the reading that you have done.  What patterns stand out?  Do the different sources converge on a consensus?  Or not?  What unresolved questions still remain?  You should look over your notes (it may also be helpful to reorganize them), and as you do, to think about how you will present this research in your literature review.  Are you going to summarize or critically evaluate?  Are you going to use a chronological or other type of organizational structure?  It can also be helpful to create an outline of how your literature review will be structured.

5. Write the literature review itself and edit and revise as needed.

The final stage involves writing.  When writing, keep in mind that literature reviews are generally characterized by a  summary style  in which prior research is described sufficiently to explain critical findings but does not include a high level of detail (if readers want to learn about all the specific details of a study, then they can look up the references that you cite and read the original articles themselves).  However, the degree of emphasis that is given to individual studies may vary (more or less detail may be warranted depending on how critical or unique a given study was).   After you have written a first draft, you should read it carefully and then edit and revise as needed.  You may need to repeat this process more than once.  It may be helpful to have another person read through your draft(s) and provide feedback.

6. Incorporate the literature review into your research paper draft. (note: this step is only if you are using the literature review to write a research paper. Many times the literature review is an end unto itself).

After the literature review is complete, you should incorporate it into your research paper (if you are writing the review as one component of a larger paper).  Depending on the stage at which your paper is at, this may involve merging your literature review into a partially complete Introduction section, writing the rest of the paper around the literature review, or other processes.

These steps were taken from: https://psychology.ucsd.edu/undergraduate-program/undergraduate-resources/academic-writing-resources/writing-research-papers/writing-lit-review.html#6.-Incorporate-the-literature-r

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Getting started with your Literature Review

• Introduction
• What is a good literature review?
• Future proofing

A literature review is a  comprehensive  and  critical  review of literature that provides the theoretical foundation of your chosen topic.

A review will demonstrate that an exhaustive search for literature has been undertaken. It might be used for a thesis, a report, a research essay or a study. 

A good literature review is a critical component of academic research, providing a comprehensive and systematic analysis of existing scholarly works on a specific topic. Here are the key elements that make up a good literature review:

Focus and clarity: A good literature review has a clear and well-defined research question or objective. It focuses on a specific topic and provides a coherent and structured analysis of the relevant literature.

I n-depth research: A comprehensive literature review involves an extensive search of relevant sources, including academic journals, books, and reputable online databases. It ensures that a wide range of perspectives and findings are considered.

Critical evaluatio n: A good literature review involves a critical assessment of the quality, credibility, and relevance of the selected sources. It evaluates the methodologies, strengths, weaknesses, and limitations of each study to determine their impact on the overall research.

Synthesis and analysis : A literature review should go beyond summarizing individual studies. It involves synthesizing and analyzing the findings, identifying patterns, themes, and gaps in the existing literature, and presenting a coherent narrative that connects different works.

Contribution to knowledg e: A good literature review not only summarizes existing research but also contributes to the knowledge base. It identifies gaps, inconsistencies, or unresolved debates in the field and suggests avenues for further research.

Clear and concise writing : A well-written literature review presents complex ideas in a clear, concise, and organized manner. It uses appropriate language, avoids jargon, and maintains a logical flow of information.

Proper citation and referencing: Accurate citation and referencing of the reviewed sources are crucial for maintaining academic integrity. Following the appropriate referencing style guidelines ensures consistency and allows readers to access the cited works.

In summary, a good literature review demonstrates a thorough understanding of the topic, critically engages with existing literature, and offers valuable insights for future research.

Where should you search?

The Library uses MultiSearch as an access point to our subscriptions and resources. Using MultiSearch is a good place to start. 

You can also search directly in databases. Every discipline has specialist databases and there are also good multidisciplinary databases such as Scopus . Check the Databases page on this guide or ask your Faculty Librarian for advice.

You might also like to consider statistics, government publications or conference proceedings. This will depend on the question you're researching.

What should you read?

Not everything! 

• Skim the title, the keywords, the abstract ... know when to pass on something and move on. 
• Also know when to stop your literature review. When you start seeing the same material repeated in searches, or no new ideas or perspectives, maybe you have it covered. 

Evaluating Literature

You will need to read critically when assessing material for inclusion in your literature review. Each piece of information you look at (whether a journal article, a book, a video, or something else) should be assessed. 

• Is the material current?
• Does it have a bias (why was is published)?
• Is the author authoritative?
• Is the journal well regarded in the field (peer reviewed journals are  the gold standard but other journals are worthy too). 
• Does it provide enough coverage of the topic, or is it basic?
• Will books or journal articles be most useful for your interest area - or do you need to find other materials like government publications, or primary sources?

Analyse the Literature 

Once you've read widely on your subject, stop to consider what new insights this knowledge has provided. 

• Can you see any ideas emerging more strongly than others?
• Have you changed your position since starting your reading? Perhaps the evidence has made you reconsider your starting viewpoint - or it might have made you more committed to it. However, you should read with an open mind, and be prepared to change your thinking if the evidence points that way.
• Make note of a few points every time you read something. Key arguments or themes. Perhaps a note of ideas you'd like to explore more. You might want to attach this information in the same file we've mentioned in the 'future proofing' tab. 

Keep a search diary

Set up a document or spreadsheet to record where you've searched, and also the search strategies you've used. Record the search terms and also the places which have served you well. For instance, is there a particular database which had good coverage?

You may need to repeat searches in the future and this information will help. It might also be requested by your supervisor. 

Saving alerts

There are many options for setting up alerts which will help you keep track of new publications by a journal, or an author who is key in your research area, or even when other people cite the papers you have noted (maybe their work will be of interest to you).

These include: 

• Table of contents (TOC)
• Citation alerts
• Topic or subject alerts
• Author alert

Developing a comprehensive search strategy

• Before you start

1. Consider the guidance in the "getting started" box above before starting your search. 

2. Develop your research question or need.

3. Set up your search diary to record your progress and as a reference guide to come back to. 

1. Identify the  major concepts  from your  research question or topic.

Let's say that our topic is:  How do alternative energy sources play a role in climate change?   

The major concepts will be

• a lternative energy sources
• climate change

2. List  synonyms or alternative terms  for each concept and organise them in a table like the one below - using a column for each major concept. Use as many columns as you have major concepts.

Tools and tips to assist with this process:   

• Run  scoping searches  for your topic in your favourite database or databases such as Google Scholar or Scopus to identify how the literature can express your concepts. Scan titles, subject headings (if any) and abstracts for words describing the same things as your major concepts.
• Text mining tools  including  PubMed Reminer  especially if you are using a database with MeSH such as Medline or Cochrane. There are many others however.
• As you find something new,  add it to the appropriate column on your list  to incorporate later in your search.

Create your search strategy from the concepts, synonyms, phrases etc in your Concept Grid 

Identify the best databases for your topic. Check the databases tab  in the left menu on this Guide.

N.B.The syntax/search tools for your search may depend on the particular database you are searching in. Most databases have a Help screen to assist.  

However, the majority of databases will use Boolean operators (AND, OR, NOT)  and other commonly used search tools :

• Use "OR" to connect each of your synonyms (eg "climate change" OR "global warming")
• Use "AND" to connect each of your concepts.
• (Use "NOT" to exclude terms - but these should be used sparingly as they can knock out useful results.)
• Use the Truncation symbol * at the end of word roots which might have alternative endings eg: manag* will retrieve: manage; management; managing, managerial etc.
• Use quotes to keep together words of phrases (eg "climate change")
• Group your concepts algebraically using parentheses. 
• Consider, is your term alternatively expressed as two words? (eg hydro electricity or hydroelectricity (you should include both!))

So with our question/topic:  How do alternative energy sources play a role in climate change?

After identifying our major concepts and synonyms for each and employing some of the tools mentioned above, our constructed search strategy might look something like this:

("alternative energ*" OR "wind power" OR "Solar power" OR "Solar energy" OR Renewabl* OR geothermal OR hydroelectricity OR "hydro electricity") AND ("climate change" OR "global* warm*" or "greenhouse gas*" or "green house gas*")

3. Be prepared to revise, reassess and refine  your search strategies after you have run your initial searches to ensure you get the best possible results. If you retrieve too many false results or "noise", try to analyse why. For example, you may have used a word which has alternative meanings.

If you have too many results, you can either add another concept or remove some synonyms

If you have too few results, try searching with fewer concepts (identify the least most important to omit) or add more synonyms.

Your  Faculty or Clinical Librarian  will be able to assist with this process.

Further reading

• Other sources
• Journal Articles
• Books and Chapters

Related Guides

• Systematic Reviews
• Using MultiSearch

We have guidance on  Literature Reviews in StudyWISE .  This guides focuses on the writing skills associated with Literature Reviews.  

You'll find it  on iLearn (Macquarie University's learning portal)

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What is a Literature Review?

The scholarly conversation.

A literature review provides an overview of previous research on a topic that critically evaluates, classifies, and compares what has already been published on a particular topic. It allows the author to synthesize and place into context the research and scholarly literature relevant to the topic. It helps map the different approaches to a given question and reveals patterns. It forms the foundation for the author’s subsequent research and justifies the significance of the new investigation.

A literature review can be a short introductory section of a research article or a report or policy paper that focuses on recent research. Or, in the case of dissertations, theses, and review articles, it can be an extensive review of all relevant research.

• The format is usually a bibliographic essay; sources are briefly cited within the body of the essay, with full bibliographic citations at the end.
• The introduction should define the topic and set the context for the literature review. It will include the author's perspective or point of view on the topic, how they have defined the scope of the topic (including what's not included), and how the review will be organized. It can point out overall trends, conflicts in methodology or conclusions, and gaps in the research.
• In the body of the review, the author should organize the research into major topics and subtopics. These groupings may be by subject, (e.g., globalization of clothing manufacturing), type of research (e.g., case studies), methodology (e.g., qualitative), genre, chronology, or other common characteristics. Within these groups, the author can then discuss the merits of each article and analyze and compare the importance of each article to similar ones.
• The conclusion will summarize the main findings, make clear how this review of the literature supports (or not) the research to follow, and may point the direction for further research.
• The list of references will include full citations for all of the items mentioned in the literature review.

Key Questions for a Literature Review

A literature review should try to answer questions such as

• Who are the key researchers on this topic?
• What has been the focus of the research efforts so far and what is the current status?
• How have certain studies built on prior studies? Where are the connections? Are there new interpretations of the research?
• Have there been any controversies or debate about the research? Is there consensus? Are there any contradictions?
• Which areas have been identified as needing further research? Have any pathways been suggested?
• How will your topic uniquely contribute to this body of knowledge?
• Which methodologies have researchers used and which appear to be the most productive?
• What sources of information or data were identified that might be useful to you?
• How does your particular topic fit into the larger context of what has already been done?
• How has the research that has already been done help frame your current investigation ?

Examples of Literature Reviews

Example of a literature review at the beginning of an article: Forbes, C. C., Blanchard, C. M., Mummery, W. K., & Courneya, K. S. (2015, March). Prevalence and correlates of strength exercise among breast, prostate, and colorectal cancer survivors . Oncology Nursing Forum, 42(2), 118+. Retrieved from http://go.galegroup.com.sonoma.idm.oclc.org/ps/i.do?p=HRCA&sw=w&u=sonomacsu&v=2.1&it=r&id=GALE%7CA422059606&asid=27e45873fddc413ac1bebbc129f7649c Example of a comprehensive review of the literature: Wilson, J. L. (2016). An exploration of bullying behaviours in nursing: a review of the literature.   British Journal Of Nursing ,  25 (6), 303-306. For additional examples, see:

Galvan, J., Galvan, M., & ProQuest. (2017). Writing literature reviews: A guide for students of the social and behavioral sciences (Seventh ed.). [Electronic book]

Pan, M., & Lopez, M. (2008). Preparing literature reviews: Qualitative and quantitative approaches (3rd ed.). Glendale, CA: Pyrczak Pub. [ Q180.55.E9 P36 2008]

Useful Links

• Write a Literature Review (UCSC)
• Literature Reviews (Purdue)
• Literature Reviews: overview (UNC)
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Evidence Matrix for Literature Reviews

The  Evidence Matrix  can help you  organize your research  before writing your lit review.  Use it to  identify patterns  and commonalities in the articles you have found--similar methodologies ?  common  theoretical frameworks ? It helps you make sure that all your major concepts covered. It also helps you see how your research fits into the context  of the overall topic.

• Evidence Matrix Special thanks to Dr. Cindy Stearns, SSU Sociology Dept, for permission to use this Matrix as an example.
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Psychology: Literature Review

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Sample Literature Review

• SAMPLE Literature Review in APA7 (PDF) This is a PDF for you to use as an example of the formatting and content of a literature review for this assignment.

Click on the link above to open the PDF for the SAMPLE Literature Review

Don't forget that all the journal/scholarly articles you choose will be on the same topic. Do NOT choose magazine or newspaper articles for this assignment.

For more help finding scholarly journal articles with research, see Find Articles.  

For more help with APA references and in-text citations, see APA 7 Citation Help .

Best Databases for the Psychology Literature Review

How the Library Helps You Identify Types of Sources

Other Helpful Library Resources

• APA Citation Page Use this page to help you create references and in-text citations for APA 7.
• Finding Articles for Psychology, including those with Original Research Information on this page helps students find articles with original research and explains the sections of a scholarly journal article.

Finding Scholarly Articles in the Library's Database

What is a Literature Review

The literature review that you write summarizes and explains research that has been done on a particular topic. All of the articles will be on the same topic . You've seen literature reviews in academic articles that are written to show what's already been researched and why the authors choose to do their own research. Since you aren't actually conducting long, extensive research, you are are looking at a body of research and looking for common issues and also the progression of research (more sophisticated, taking new angles, etc.).

Content of the Review

Introduction.

The introduction explains the focus and establishes the importance of the subject. It discusses what kind of work has been done on the topic and identifies any controversies within the field or any recent research which has raised questions about earlier assumptions. It may provide background or history. It concludes with a purpose or thesis statement. This statement will sum up and evaluate the state of the art in this field of research.

Often divided by headings/subheadings, the body summarizes and evaluates the current state of knowledge in the field. It notes major themes or topics, the most important trends, and any findings about which researchers agree or disagree. 

The conclusion summarizes all the evidence presented and shows its significance.You should suggest any practical applications of the research as well as the implications and possibilities for future research.

How to Write A Literature Review

1. find a working topic.

Look at your textbook and Blackboard information. You should find a topic that's not too broad or too narrow. For example, developmental disabilities may be too broad but autism may be a better fit.

2. Review the Literature

• Use one of the psychology databases. 
• Remember that the reference lists of recent articles and reviews can lead to valuable papers
• Use the date slider bar to find older articles that might be considered "seminal" or the foundation for later studies.

3. Read the Selected Articles Thoroughly and Evaluate Them

• What assumptions do most/some researchers seem to be making?
• What methodologies do they use? what testing procedures, subjects, material tested?
• Evaluate and synthesize the research findings and conclusions drawn
• Note experts in the field: names/labs that are frequently referenced
• Watch for popularity of theories and how this has/has not changed over time

4. Develop a Working Thesis

Write a one or two sentence statement summarizing the conclusion you have reached about the major trends and developments you see in the research that has been done on your subject.

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Conducting Literature Reviews

Finding literature reviews in psycinfo, more help on conducting literature reviews.

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The APA definition of a literature review (from http://www.apa.org/databases/training/method-values.html ):

 Survey of previously published literature on a particular topic to define and clarify a particular problem; summarize previous investigations; and to identify relations, contradictions, gaps, and inconsistencies in the literature, and suggest the next step in solving the problem.

 Literature Reviews should:

• Key concepts that are being researched
• The areas that are ripe for more research—where the gaps and inconsistencies in the literature are
• A critical analysis of research that has been previously conducted
• Will include primary and secondary research
• Be selective—you’ll review many sources, so pick the most important parts of the articles/books.
• Introduction: Provides an overview of your topic, including the major problems and issues that have been studied.
• Discussion of Methodologies:   If there are different types of studies conducted, identifying what types of studies have been conducted is often provided.
• Identification and Discussion of Studies: Provide overview of major studies conducted, and if there have been follow-up studies, identify whether this has supported or disproved results from prior studies.
• Identification of Themes in Literature: If there has been different themes in the literature, these are also discussed in literature reviews.   For example, if you were writing a review of treatment of OCD, cognitive-behavioral therapy and drug therapy would be themes to discuss.
• Conclusion/Discussion—Summarize what you’ve found in your review of literature, and identify areas in need of further research or gaps in the literature.

Because literature reviews are a major part of research in psychology, Psycinfo allows you to easily limit to literature reviews.  In the advanced search screen, you can select "literature review" as the methodology.

Now all you'll need to do is enter your search terms, and your results should show you many literature reviews conducted by professionals on your topic.

When you find an literature review article that is relevant to your topic, you should look at who the authors cite and who is citing the author, so that you can begin to use their research to help you locate sources and conduct your own literature review.  The best way to do that is to use the "Cited References" and "Times Cited" links in Psycinfo, which is pictured below.

This article on procrastination has 423 references, and 48 other articles in psycinfo are citing this literature review.  And, the citations are either available in full text or to request through ILL.  Check out  the article "The Nature of Procrastination" to see how these features work.

By searching for existing literature reviews, and then using the references of those literature reviews to begin your own literature search, you can efficiently gather the best research on a topic.  You'll want to keep in mind that you'll need to summarize and analyze the articles you read, and won't be able to use every single article you choose.

You can use the search box below to get started.

Adelphi Library's tutorial, Conducting a Literature Review in Education and the Behavioral Sciences covers how to gather sources from library databases for your literature review.

The University of Toronto also provides "A Few Tips on Conducting a Literature Review" that offers some good advice and questions to ask when conducting a literature review.

Purdue University's Online Writing Lab (OWL) has several resources that discuss literature reviews: 

http://owl.english.purdue.edu/owl/resource/666/01/

https://owl.english.purdue.edu/owl/resource/994/04/   (for grad students, but is still offers some good tips and advice for anyone writing a literature review)

Journal articles (covers more than 1,700 periodicals), chapters, books, dissertations and reports on psychology and related fields.

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PSY 306: Cognitive Psychology

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• What is a Literature Review?
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• A literature review is a critical, analytical summary and synthesis of the current knowledge of a topic. As a researcher, you collect the available literature on a topic, and then select the literature that is most relevant for your purpose. Your written literature review summarizes and analyses the themes, topics, methods, and results of that literature in order to inform the reader about the history and current status of research on that topic.

What purpose does a literature review serve?

• The literature review informs the reader of the researcher's knowledge of the relevant research already conducted on the topic under discussion, and places the author's current study in context of previous studies.
• As part of a senior project, the literature review points out the current issues and questions concerning a topic. By relating the your research to a knowledge gap in the existing literature, you should demonstrate how his or her proposed research will contribute to expanding knowledge in that field.
• Short Literature Review Sample This literature review sample guides students from the thought process to a finished review.
• Literature Review Matrix (Excel Doc) Excel file that can be edited to suit your needs.
• Literature Review Matrix (PDF) Source: McLean, Lindsey. "Literature Review." CORA (Community of Online Research Assignments), 2015. https://www.projectcora.org/assignment/literature-review.
• Academic Writer (formerly APA Style Central) This link opens in a new window Academic Writer (formerly APA Style Central) features three independent but integrated centers that provide expert resources necessary for teaching, learning, and applying the rules of APA Style.
• Sample Literature Reviews: Univ. of West Florida Literature review guide from the University of West Florida library guides.
• Purdue University Online Writing Lab (OWL) Sample literature review in APA from Purdue University's Online Writing Lab (OWL)

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PSYC 321--Social Psychology: Literature Review

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Methods for Synthesizing Qualitative Reviews

Ruth Garside, PhD, Senior Lecturer in Evidence Synthesis at the Medical School, University of Exeter

Check out PRISMA to guide your review: especially the checklist for your review and the flow diagram to develop your protocol.

The PRISMA Statement:

Anybody writing a systematic literature review should be familiar with the  PRISMA statement . The PRISMA Statement is a document that consists of a 27-item  checklist  and a  flow diagram  and aims to guide authors on how to develop a systematic review protocol and what to include when writing the review.

A protocol ideally includes the following:

Databases to be searched and additional sources (particularly for grey literature)

Keywords to be used in the search strategy

Limits applied to the search.

Screening process

Data to be extracted

Summary of data to be reported

From Majumbder, K. (2015). A young researcher's guide to a systematic review. Editage Insights. Retrieved from   https://www.editage.com/insights/a-young-researchers-guide-to-a-systematic-review#

Systematic Literature Review

Here are a couple of articles found in Sage Research Methods Online which give good definitions of what a Systematic Literature Review is and how to do one:

Dempster, M. (2003). Systematic review . In Robert L. Miller, & John D. Brewer

      (Eds.), The A-Z of Social Research. (pp. 312-317). London, England: SAGE

      Publications, Ltd. doi: http://dx.doi.org/10.4135/9780857020024.n110

​Crisp, B.R. (2015). Systematic reviews: a social work perspective . Australian

      Social Work, 68 (3): 284-295. http://dx.doi.org/10.1080/0312407X.2015.102426

Schick-Makaroff, K., MacDonald, M. Plummer, M., Burgess, J., & Neander, W. (2016).

      What Synthesis Methodology Should I Use? A Review and Analysis of Approaches to

       Research Synthesis .  AIMS Public Health, 3 (1). 172-215.

      doi: 10.3934/publichealth.2016.1.172

       http://dspace.library.uvic.ca:8080/handle/1828/7464

Inclusion/Exclusion Criteria

• Veale, T.Search concept tools. Retrieved from //medhealth.leeds.ac.uk/info/639/information_specialists/1500/search_concept_tools Describes various structures for developing criteria: PICO, PICOS, SPIDER, SPICE, etc.

Support for Systematic Reviews

• Systematic Review Search Strategies Worksheet Organize your review by topic, database, search string, and criteria
• Evaluation of Sources Questions to ask of primary source articles (both qualitative and quantitative) when evaluating their quality
• Software for Organizing Systematic Reviews From Columbia University Medical Center's Library
• Evidence-Based Practice
• Meta-Ethnography
• Qualitative Evidence Synthesis

Examples of Systematic Reviews

Prospero: International Prospective Register of Systematic Reviews

This web site collects systematic reviews in process.  By reviewing them, you can see what is included in a systematic review.

Campbell Systematic Reviews

This Monograph series is an open access collection of peer-reviewed systematic reviews.  "Campbell systematic reviews follow structured guidelines and standards for summarizing the international research evidence on the effects of interventions in crime and justice, education, international development, and social welfare." Registration and protocols are available from the Campbell Collaboration Library of Systematic Reviews .

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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.

Review of Related Literature (RRL): Effects of Nutrition on Cognitive Development in Children

Ai generator, 1. introduction.

This review examines the effects of nutrition on cognitive development in children over the past decade. Proper nutrition is crucial for the physical and cognitive growth of children.

2. Theoretical Framework

Based on Nutritional Neuroscience and Developmental Psychology theories, this review explores how nutrition influences cognitive development in children.

3. Review of Empirical Studies

Nutrient Deficiency

• Smith & Johnson (2015) found that iron deficiency negatively impacted cognitive development in a study of 500 children. The children with iron deficiency showed lower scores in attention and memory tests compared to their well-nourished peers.

Balanced Diet

• Lee & Davis (2016) reported that children with balanced diets had better cognitive performance in a survey of 700 elementary students. The study highlighted the importance of vitamins and minerals in supporting brain function and development.

Supplementation

• Brown & Miller (2017) showed that omega-3 supplementation improved attention and memory in a study of 300 children. The children who received omega-3 supplements performed better in cognitive tasks than those who did not.

4. Methodological Review

Studies used surveys, longitudinal designs, and experimental methods. Surveys provided broad data but were limited by self-report biases. Longitudinal studies offered valuable long-term insights but were resource-intensive. Experimental methods showed causation but had limited external validity.

5. Synthesis and Critique

The literature indicates that proper nutrition significantly impacts cognitive development in children. Nutrient deficiencies can impair cognitive functions, while balanced diets and supplementation can enhance them. However, findings vary based on study design and population. More longitudinal and controlled studies are needed to confirm these effects and understand the underlying mechanisms.

6. Conclusion

Current research supports the crucial role of nutrition in cognitive development, emphasizing the need for balanced diets and proper nutrient intake. Further research is necessary to explore long-term impacts and develop effective nutritional interventions.

7. References

• Smith, J., & Johnson, L. (2015). Impact of Iron Deficiency on Cognitive Development . Journal of Nutritional Science, 58(3), 201-210.
• Lee, P., & Davis, R. (2016). Balanced Diet and Cognitive Performance in Children . Journal of Child Development, 20(4), 145-156.
• Brown, A., & Miller, M. (2017). Omega-3 Supplementation and Cognitive Function . Journal of Pediatric Nutrition, 33(2), 120-130.

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