How to Write a Literature Review (Step by Step)

A literature review is not a list of summaries — it is a synthesis that shows what the field knows, where it disagrees, and what it has missed. A strong review reads as a single argument built from many sources.

1. Define a focused question

Start with a clear, bounded question. Too broad and you drown; too narrow and there is nothing to review. Define the scope: topic, population, time window, and the kinds of evidence you will include.

2. Search systematically and record it

Search several databases, record your terms, and deduplicate. Transparency about how you found sources is what makes a review trustworthy (and is required for a systematic review with PRISMA reporting).

3. Synthesise by theme, not by paper

The common mistake is "paper 1 says…, paper 2 says…". Instead, organise by theme or finding, and within each theme compare how sources agree, conflict, or build on one another. A comparison table helps the reader see the landscape at a glance.

4. Be critical and ground every claim

Evaluate quality, not just content: sample sizes, methods, and limitations. Every factual claim must cite the source it came from, so a reader can verify it. Unsupported claims are the fastest way to lose a reviewer's trust.

5. End with the gap and your contribution

Close by naming what the literature leaves unanswered — the gap your own work will address.

How ProSearch helps

ProSearch generates a multi-pass literature review with PRISMA-style tables and paragraph-level citation grounding — every sentence ties back to a real source you can click. It is a rigorous first draft you verify and refine, not a black box.