1. Writing a Literature Review
Basics
Liberally adapted from the University of Guelph, UNC, and other sources.

2. Academic Paper or Lit Review?
The primary focus of an academic research paper is to develop a new argument. Research papers often do contain literature reviews, in a research paper the literature serves as a foundation and as support for any new insights you contribute.
The focus of a literature review, however, is to summarize and synthesize the arguments and ideas of others without adding new contributions.

3. Purposes of a Lit Review
It gives readers access to research on a particular topic by selecting quality articles or studies that are relevant, meaningful, and valid and summarizing them into one complete report
It provides an excellent starting point for researchers in a new area by forcing them to summarize, evaluate, and compare original research in that specific area
It ensures that researchers do not duplicate work that has already been done
It can provide clues as to where future research is heading or recommend areas on which to focus
It highlights key findings
It identifies inconsistencies, gaps and contradictions in the literature
It provides a constructive analysis of the methodologies and approaches of other researchers

4. Structure of a 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.  in a review that is an introduction or preparatory to a thesis or research report, it will suggest how the review findings will lead to the research the writer proposes to undertake.
Body - 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. If the review is preliminary to your own thesis or research project, its purpose is to make an argument that will justify your proposed research. Therefore, it will discuss only that research which leads directly to your own project.
Conclusion - The conclusion summarizes all the evidence presented and shows its significance. If the review is an introduction to your own research, it highlights gaps and indicates how previous research leads to your own research project and chosen methodology

5. Steps
Pick a working topic: consult with your advisor, other faculty, and review older works done in your department. This doesn’t need to be your final topic but should be in the field of interest. Choose the literature you will review: Select databases and other lit sources (see the Subject Guide for your discipline) and start identifying subject headings/ descriptors/ that are appropriate. Start identifying classic studies, theories, and theorists. Analyze: Read broadly to start and identify assumptions, methodologies, testing procedures, and research findings. Note often-cited authors, major works, conflicting theories and contested results. Watch for how theories evolve (or not) over time.

6. Steps, continued….
Organize - group your selected articles by identified patterns and themes: common findings, major trends in the research, which theories emerge as most influential.
Develop your thesis - write a concise statement summarizing your conclusions about major trends and developments.
Organize your paper – Develop headings and subheadings. The sections of your paper should link and progress thematically / topically, not by focusing on the work of individual researchers.
Write and review – Focus on analysis: compare and evaluate the literature rather than list developments chronologically. Analysis and synthesis are the crucial elements.

7. Additional sources
papers/writing-literature-review ml