What is the purpose of a literature review in your research, and why is it important to do a thorough assessment of the literature before starting your project?
You can't do research unless you know everything there is to know about your subject or research problem.
However!
The problem is, where do you look for the essential information and insight?
A review of the relevant literature is most likely the best answer to this problem.
Many young researchers are unaware of the need of doing a comprehensive review of relevant literature before beginning their study. Let's take a look at what a literature review is and why it's so vital in the research process.

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Identifying a literature review's scope
Simply said, a literature review is a study of books, journals, and articles that leads to a discussion and summary of prior research conducted by other researchers in your field and area of interest in order to undertake research.
Does this mean you just compile a list claiming that xyz researcher accomplished xyz work in xyz field within xyz time frame?
A literature review is a methodical and thorough listing, critical evaluation, synthesis, and summary of past research that the reader can see.
Your subject-matter knowledge and comprehension, as well as
You will be able to address concepts, theories, and other essential topics related to your research during this phase.

The purpose of a literature review is to discover what is already available.
While writing their study, many people underestimate the importance of a literature review and see it as a mere formality, i.e., identifying relevant pieces of work by other researchers and leaving it at that. On the other hand, a well-written literature review serves as the foundation for your research. A literature review may be used to accomplish a number of goals, and the following discussion will aim to highlight a few of them.

Your expertise in your field
One of the most typical motivations for writing a literature review is to demonstrate your knowledge of your subject and mastery of your trade. Once you've performed the key homework, which includes studying the sources, reviewing all of the important themes given in them, and challenging their relevance to your research subject, you'll have done a good job on your project. By using a critical approach to the present body of knowledge, inquiry, and mapping of the area, you may show the readers that you have a full comprehension of the issue and know what you're talking about. This will urge readers to take your work seriously right away, which is what a literature review is supposed to do. To demonstrate to the reader that you are well-versed in your profession!

Justification for your research
A well-written review provides the foundation for your study questions and inquiry. One of the motivations for undertaking research in a previously researched topic is to contribute to the existing body of knowledge. A literature review might help you find and fill research gaps that have been left unsolved by past researchers. As a consequence, a literature review gives you the opportunity to defend and justify your study subject.

Contributes to theoretical and methodological framework development.
A literature review also serves as a basis for the development of theoretical and methodological frameworks, both of which are required for research. By illustrating how other studies similar to yours have been done in the past and analyzing their strengths and shortcomings, you will be able to adopt he most appropriate methodology and analytical processes for your own study.

Help with your research is available.
A literature review also serves as a believable solid backdrop and legitimate supporting proof for your study results, arguments, and statements when contrasted to the existing body of knowledge.

Duplication is kept to a bare minimum.
Another important purpose of a literature review is that it aids you in avoiding duplication and plagiarism of any type as a researcher. After you have a strong idea of what work has previously been done, written down, and recorded, you will surely avoid spinning the wheel over and over. This safeguards you not only against allegations of copying, but also from wasting time and effort.

This is neither the case, nor is it the point of performing a literature review. It's a bit more complicated than that.

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