What is the function of a literature review in research?

The function of a literature review in research is to summarize existing research and identify gaps in knowledge. A literature review serves as a comprehensive evaluation of existing literature related to a specific topic or research question. It enables researchers to understand the current state of knowledge, recognize patterns, and highlight areas where further investigation is needed. By synthesizing findings from various studies, the literature review forms a foundation for new research, offering context for the current study and underscoring its significance.

In evaluating existing research, a literature review can also help clarify theoretical frameworks, methodological approaches, and prevalent themes, ensuring that the new research adds value to the body of knowledge. Rather than just presenting findings or conducting experiments, it critically assesses what has already been discovered and sets the stage for future inquiry by preventing duplication of effort and guiding researchers to unexplored areas in their field. This is vital for the progression of knowledge and informs the creation of well-founded research hypotheses or questions in subsequent studies.