The purpose of a literature review is to:
- Provide an overview by reviewing scholarly literature relevant to a topic, what is known about a topic, or knowledge, information, or ideas that have been established on a topic.
- Identify:
- areas of study by pointing the way forward for further research
- areas of agreement and disagreement
- seminal works and highlight exemplary studies
- significant personalities and researchers working in the same field
- Help define or limit your problem, or design your methodology using methods others have used.
- Justify your research question by explaining how your question fits into the larger picture.
- Analyze strengths and weakness of previous research.
- Highlight gaps in research.
- Avoid unnecessary duplication.