A peer-reviewed article is reviewed and evaluated by experts in the field who make "recommendations concerning acceptance or rejection, and revision of the article" prior to being selected by the journal editor for publication (Peek & Newby, 1996, 110).*
When searching the Library's subscription databases, read the database descriptions to determine if it contains only peer-reviewed materials (e.g. Science Direct, JSTOR).
If a database contains both peer-reviewed and popular articles, choose the peer-reviewed limiter on the left of your results page, or in the advanced search options as below.
*Peek, R.P., & Newby, G.B. (Eds.) (1996). Scholarly publishing: The electronic frontier.
Cambridge, MA: The MIT Press.
(See also How do you find articles using the online databases?.)
(Permanent link to "How do I find peer-reviewed articles?")