It summarizes the current knowledge of the subject and highlights its crucial features, pointing out its main issues, such as recent findings, trends, etc.
If your paper is an introductory part of a thesis, it must be focused on a central argument that supports the idea of your research.
Common in the social and physical sciences, but also sometimes required in the humanities, a literature review is a summary of past research in your subject area.
Sometimes this is a standalone investigation of how an idea or field of inquiry has developed over time.
The first type of literature review is often assigned as a separate paper within the research process.
Another type serves as a part of a bigger work, being either an introduction or a part of the preparation process.
The literature review also plays a big role in justifying your study and setting your research question.
This is because examining past research allows you to identify gaps in the literature, which you can then attempt to fill or address with your own work.
In case of a thesis paper, it focuses on gaps that you found in considered sources and explains a relationship between them and your own research.
If you’re working on a separate assignment, we suggest you focusing on recommendations for new researches.