Peer review is when a scientific article is sent to other people, usually scientists in the same field of study, who have extensive knowledge on the topic of the paper. This is done to help improve the quality of the paper being published.
Some pros of peer review is that you know the evidence presented is of quality and has credibility behind it. Peer review also helps the author to check themselves in case they may have missed something or weren’t aware of some other sort of scientific evidence in the scientific community. Some cons of peer review is it can be a lengthy process and in some cases people may have a different opinion than the writer and that may make the review process difficult and unfavorable for the author.
