What is peer review?
Reviewers play a central role in scholarly publishing. Peer review helps validate research, establish a method by which it can be evaluated, and increase networking possibilities within research communities. Despite criticisms, peer review is still the only widely accepted method for research validation.
Becoming a reviewer: how and why
Reviewers evaluate article submissions to journals, based on the requirements of that journal, predefined criteria, and quality, completeness and accuracy of the research presented. They provide feedback on the article and the research, suggest improvements and make a recommendation to the editor about whether to accept, reject or request changes to the article.