How to Write a Literature Review

Define the boundaries of your research before you begin searching. A literature review is not a list of everything ever written on a topic; it is a curated selection of the most relevant work. Start by turning your topic into a specific research question. For example, instead of 'climate change,' focus on 'the impact of rising sea levels on coastal real estate values in Florida.' This narrow focus allows you to filter out thousands of irrelevant papers and ensures your review remains manageable and focused.

Use academic databases like PubMed, Google Scholar, or JSTOR to find sources. Use Boolean operators (AND, OR, NOT) to refine your results. Once you have a list of potential sources, evaluate them using the CRAAP test (Currency, Relevance, Authority, Accuracy, and Purpose). Prioritize peer-reviewed articles and seminal works that are frequently cited by other researchers. Look at the reference lists of your initial sources to find additional 'must-read' papers in the field.

As you read, look for patterns across the literature. Do most authors agree on a specific theory? Is there a major conflict or debate between two schools of thought? Identifying a research gap is the most critical part of this step - find what is missing or under-researched in the current literature. This gap provides the justification for your own research. Take organized notes that categorize sources by these themes rather than just by author name.

Choose an organizational strategy that best fits your topic. A thematic structure is most common, where you organize paragraphs around specific concepts. A chronological structure works well if you are tracing the evolution of a theory over time. A methodological structure is appropriate if you are comparing different research methods (e.g., qualitative vs. quantitative studies). Ensure your outline includes an introduction that establishes the context and a conclusion that summarizes the state of the field.

Write your review by synthesizing sources. This means your paragraphs should be organized by ideas, not by individual papers. Instead of saying 'Smith says X' in one paragraph and 'Jones says Y' in the next, group them together. Use transition words to show relationships: 'While Smith (2020) argues for X, Jones (2021) suggests Y, indicating a growing shift toward Z.' Your goal is to tell a story about the current state of knowledge in your field.