A literature review maps what is already known on your topic. It shows where your own work fits, reveals the gaps still worth filling, and saves you from reinventing what others have already done. You can’t add to a conversation until you’ve listened to it.

“I’ll just read everything first.” It’s a noble plan, and a trap — there is always more to read, and you’d never start writing. A literature review isn’t about reading everything. It’s about mapping the conversation that already exists around your question, so you can see where your contribution fits.

The move that separates a good review from a list

The commonest mistake is to write a review like a shopping list: “Author A said this. Author B said that. Author C said the other.” That’s a summary, not a review. The skill is to synthesise — to group sources by idea and show how they speak to each other.

From list to conversation
List (weak): “Okafor (2019) found X. Bello (2021) found Y. Mensah (2022) found Z.”
Synthesis (strong): “Several studies link irrigation to higher yields (Okafor; Bello), while others caution that cost puts it out of reach for the poorest farmers (Mensah).”
Now the sources are in conversation — and a gap is starting to show.

A simple way in: search for relevant work, read each piece for its main argument, then sort them into two or three themes. The themes become the backbone of your review.

Try this
For your own question, name two themes you’d expect the existing research to cluster around — and one source you think might sit in each.

Reviews involve a lot of sources, which raises an unglamorous but vital question: how do you keep track of them all without losing your mind? That’s next. On to Organizing Research.

© FRELIP, released under CC BY 4.0. Curated by the FRELIP Open Courseware editorial team.

Última alteração: sexta-feira, 5 de junho de 2026 às 08:36