Peer-Reviewed articles are articles that have been "sent to the author's peers (researchers and scholars) who are in the same discipline for review. The reviewers determine if the article should be published based on the quality of the research, including the validity of the data, the conclusions the authors' draw and the originality of the research. This process is important because it validates the research and gives it a sort of "seal of approval" from others in the research community."
-- from Oregon State University's Scholarly Articles: How can I tell? Guide
How can I tell if an article is peer-reviewed?
In most databases, there is a limiter for peer-reviewed articles. Additionally, if you click on a hypertext journal title, a peer-review field is often included in the detailed information. You can also visit a the publisher's page for a journal. If it is peer-reviewed, it is often noted in descriptive text of the journal. Do note that just because a journal is peer-reviewed does not mean that all content included is peer-reviewed. For example, editorials and book reviews are types of content that are not peer-reviewed.
Use the Boolean Operators (AND, OR, NOT) to improve your search results:
Use truncation to improve your search results: