Peer-reviewed articles are:

• written by subject experts
• reviewed by other subject experts ("peers')
• published in peer-reviewed journals.

Peer-reviewed journals are sometimes called refereed journals.

Peer-reviewed articles and journals are regarded as being more scholarly and authoritative than article and journals that are not peer-reviewed.

Watch this video for an explanation of peer review and how to check that a journal is peer-reviewed. For written explanations, see the next page - How to check if a journal is peer-reviewed.