Articles published in peer-reviewed (also known as refereed) journals have been through a formal approval process, which checks that the article is accurate, well-researched, and contributes to the body of knowledge in the field.

So peer-reviewed articles are regarded as more scholarly, reliable, and authoritative than articles that aren't peer-reviewed.

• You can use refiners in Primo Search and in some databases to limit your search results to peer-reviewed articles.
   
• Another way to check if a journal is peer-reviewed is to check its editorial information on its website.
   
• But the best way to check or confirm that a journal is peer-reviewed is to use Ulrichsweb Global Periodicals Directory:

1. Search for the journal title (not the article title) or the journal ISSN 
2. Locate the journal in the results list
3. If there is a referee's shirt icon () in the column on the left it means the journal (and therefore the article) is refereed (peer reviewed):