Literature review plays a vital role in the research. Literature review, as a systematic method of collecting and sorting out literature, provides an important foundation for subsequent research by collecting, screening, evaluating and summarizing the information in existing literature. The following will discuss in detail the important role of literature review in subject research.

Identify research problems

Literature review can help researchers identify research problems. In the process of reading and sorting out the existing literature, researchers can fully understand and master the existing research progress, problems and shortcomings in this field, and then determine their own research problems or research directions.

At the same time, literature review can also help researchers eliminate the blind spots and shortcomings in existing research, thus avoiding the emergence of repeated research and low-level research.

Improve the quality of research

Literature review can improve the quality of research. In the process of literature review, researchers need to screen, evaluate, integrate and analyze the existing literature, which can not only help researchers deeply understand the research progress and existing problems in this field, but also help researchers find problems that have not been discovered before, thus providing new ideas and breakthrough points for research.

In addition, by comparing and summarizing the methods and experimental designs in the existing literature, researchers can further improve their own research methods and designs, thus improving the quality of research.

Support theoretical analysis and hypothesis testing

Literature review can support theoretical analysis and hypothesis testing. In the process of literature review, researchers need to summarize and comprehensively analyze the theoretical viewpoints, research models and experimental results in the existing literature.

Therefore, we can better understand the theoretical system and model in this field, and put forward our own assumptions on this basis. At the same time, researchers can also compare and statistically analyze the existing experimental results to test whether their assumptions are valid.

Provide reference for research.

Literature review can provide reference for research. In the process of writing a thesis, literature review is usually an introduction. Through the analysis and summary of the existing literature, it provides the necessary background and knowledge for the research.

And give readers a comprehensive understanding of the latest progress in this field. In addition, literature review can also provide research reference and ideas for subsequent researchers, thus promoting the further development of this field.

In a word, literature review plays a vital role in the research. Literature review provides a comprehensive study by collecting, screening, evaluating and summarizing the existing literature.