An article is considered scholarly or peer-reviewed if it appears in a journal that requires a pre-publication review of its articles. The article is read and edited by a group of subject experts who check accuracy. The articles published must meet certain standards for that particular field.
In a NUTSHELL - It doesn't get published until EXPERTS in the field say its okay.
For more information about the difference between scholarly articles and other sources, visit our Evaluating Sources guide.
If you need help finding scholarly articles, try our Answer for Finding Scholarly and Peer Reviewed articles.