Peer-reviewed (refereed or scholarly) journals are articles written by experts and are reviewed by several other experts in the field before the article is published in the journal in order to insure the article's quality. (The article is more likely to be scientifically valid, reach reasonable conclusions, etc.) In most cases the reviewers do not know who the author of the article is, so that the article succeeds or fails on its own merit, not the reputation of the expert.
Search for peer reviewed articles through the Library's search interface by selecting "peer-reviewed journals" in the filters section after you get your search results.
