Library news

Literature and systematic reviews

What is a literature review?

A literature review is a comprehensive and critical summary of existing literature on a specific topic. It typically includes a summary of the main findings of previous research, an evaluation of the strengths and weaknesses of the research, and an identification of gaps in the literature that need to be addressed. 

Why do I need one?

A literature review is important for several reasons:

1. It provides context for the research being conducted by summarising and synthesizing existing knowledge on a topic.

2. It allows researchers to identify gaps in the current literature and to determine areas where further research is needed.

3. It allows researchers to evaluate the credibility and reliability of previous research by identifying methodological weaknesses and inconsistencies in the literature.

4. It helps to establish the researcher's credibility by demonstrating their knowledge and familiarity with the existing literature on a topic.

5. It helps to avoid duplication of research by identifying studies that have already been conducted on a topic.

6. It helps to identify potential theoretical or practical implications of the research.

7. It is a step in the research process that helps to clarify the research question and to develop the research design and methods.

Overall, a literature review is a crucial step in the research process as it allows researchers to situate their research within the existing body of knowledge and to identify the most important and relevant questions to investigate.  But, you may be wondering...

How do I go about undertaking one?!

Fear not, we are here to help!  We've crafted a useful video guide to help you learn more about the process of doing your literature review.  You can find it on our website under Searching for information.

What about systematic reviews? Are they different?

A systematic review is a more rigorous and comprehensive review of the literature. It is a type of research that uses a predefined methodology to systematically identify, select, and critically appraise all relevant research studies on a specific question or topic. The goal of a systematic review is to provide a high-level summary of the current evidence on a specific question or topic. It is considered the highest level of evidence in healthcare research. The process for conducting a systematic review usually involves a comprehensive search of the literature, a predefined inclusion and exclusion criteria, a systematic selection of studies, and a critical appraisal of the included studies.

How do I go about doing a systematic review then?

Well, we're glad you asked as we've got a guide for that, too!  You can find it under Research support on our website.  We recommend starting with 'An introduction to systematic reviews' before moving on to 'Literature searching for your systematic review'. 

Need more help?

If you're still feeling a bit confused, or have any questions, please feel free to get in touch with us.  Or alternatively, why not ask your Liaison Librarian for an appointment?