ProQuest includes two search options that would seem useful in limiting to peer-reviewed journal articles, but unfortunately remove many relevant articles.
The first is 'Document Feature - References.' This is a relatively new feature and many older articles do not include it. At some point in the future it may become useful, as ProQuest is undertaking a project to revise older holdings.
The second is 'document type.' ProQuest databases refer to the same type of article in a variety of ways, and since we search multiple databases at once it is difficult to form a comprehensive search that addresses all of the ways in which peer-reviewed journal articles are 'typed' across them.
At this point it is advised to use the 'Scholarly journals, including peer-reviewed' limiter only.
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