What are the advantages and disadvantages of a review study?

A review paper is one that simply appraises already published articles.  It does not contain any primary research.

Advantages of such studies include

• Since no primary data collection and analysis is involved, it is simpler and faster to write a review paper than an empirical one.
• Flexibility in length. A review study can be presented anywhere between 1500 and 8000 words.
• The presentation of arguments is possible in the review paper.

Critical disadvantages include

• Empirical evidence can be unavailable if it is an unpopular topic.
• It can be hard to convince publishers of the novelty of your research if the data is not presented robustly.
• There are limited options for analyzing and presenting the review. Some of these are critical reviews and a systematic review.
• Review papers lack originality as compared to empirical studies.
• Review studies do not involve hypothesis testing.