PsycINFO is a bibliographic databse created by the American Psychological Association. To locate evidence-based research, there are two important techniques to use this database that will be helpful: Using the database thesaurus, and limiting by methodology
Access the Thesaurus on the Advanced Search Screen next to the Command Line Link:
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Enter your term in the search box:
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The Thesaurus has 2 views. Here is the Heirarchical view: 
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Here is the Scope Note and Related Terms: 
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Here is the Relational View:
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In either the Heirarchical or Relational views, select desired terms and combine with OR :
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You will be redirected back to the Advanced Search Screen with your search string in the box:
You will see a number of options for limiting your search. Select the methodologies that you wish to include by clicking the appropriate checkboxes. Note: Remember that you want clinical, empirical research - Interviews, Focus Groups, Literature Reviews, and Non-clinical Case Studies would not be appropriate resources for evidence based research.
