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A literature review is a survey of existing research on a particular topic. It is an important part of the research process and helps to establish a foundation for a new study by highlighting what has been done before and identifying any gaps in the existing research.

Literature reviews can be found in both academic and non-academic publications, and they can be written by researchers, professors, or students. The purpose of a literature review is to provide an overview of the current state of knowledge on a particular topic, identify areas of disagreement or controversy, and suggest directions for future research.

In order to conduct a literature review, a researcher must first define the research question or topic they want to explore. Next, they will search for relevant sources, such as journal articles, books, and conference proceedings, using databases or other search tools. The researcher will then read and analyze the sources, taking notes and highlighting important information.

After reviewing the literature, the researcher will organize their findings and present them in a clear and concise manner. This may involve creating tables or figures to summarize the data, or writing a narrative summary of the research.

Literature reviews can take many forms, depending on the purpose of the review and the guidelines of the publication or organization for which it is written. Some common types of literature reviews include narrative reviews, systematic reviews, and meta-analyses.

Narrative reviews provide a summary of the existing research on a particular topic, without attempting to systematically evaluate the quality of the studies or combine the results. Systematic reviews use a more structured approach to evaluate the quality of the studies and combine their results using statistical methods. Meta-analyses are a type of systematic review that use statistical methods to combine the results of multiple studies in order to provide a more accurate estimate of the overall effect of an intervention or treatment.

Literature reviews are an important part of the research process, as they help to provide context and background information for new research, and help to identify areas where further research is needed

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