Definition
Peer review is the evaluation of a submitted academic manuscript by other researchers who are experts in the same field, conducted before the manuscript is accepted for publication. It is the primary quality-control mechanism in academic publishing.
A manuscript that has not been peer-reviewed has not been independently validated. Peer-reviewed publication is the standard used by universities, funding bodies, and indexing databases (Scopus, Web of Science, PubMed) to assess research quality.
Types of Peer Review
Single-blind review — The reviewer knows the author's identity, but the author does not know the reviewer's identity. Most common format historically.
Double-blind review — Both author and reviewer identities are hidden. Reduces name-based bias. Required by many high-impact journals and recommended by COPE.
Open review — Author and reviewer identities are known to each other. Review reports may be published alongside the article. Increases accountability and transparency.
Post-publication review — The manuscript is published first, then reviewed publicly by the community. Used by some preprint-based journals.
The Peer Review Process
Peer Review and COPE
The Committee on Publication Ethics (COPE) provides guidelines that responsible journals follow:
Journals applying for indexing in DOAJ, Scopus, and UGC CARE are expected to follow COPE guidelines.