Find the limiter for Empirical Articles
1. Click on Advanced Search
2. Find the Document type in the lower right and select, Reports- Research
1). In PsycInfo, click advanced search.
2) Under Methodology, use the CTRL key (PC) | Command key (MAC) while clicking your mouse to select the following: Clinical Trial, Empirical Study, and Treatment Outcome.
You can also limit after the search, by clicking on All filters, then selecting methodology from the box on the right side.
1. Use Advanced Search
2. Select the box for Research Article
One technique is to limit your search results after you perform a search:
Another alternative is to construct a more sophisticated search:
Since these are published in Scholarly Journals, limit to Academic, Scholarly, or Peer reviewed articles.
Then try adding this boolean phrase to your search empirical or study or studies.
This will help limit your results but does not guarantee that all articles will be empirical studies.