To search in PsycINFO:
Make sure you're searching ONLY in PsycINFO, not in other EBSCOhost databases at the same time.
Click on Advanced Search:
Uncheck "Suggest Subject Terms" and type in your search terms.
Scroll down and click on "Tests & Testing" in the "Classification Codes" list:
Click "Search." You'll get a list of articles about studies that were performed using various tests matching your search terms.
If you look at the record for one of these articles, you will see a section listing the tests used in the study:
In the article itself, look at the "Methods" section for more information about how they used the test(s). There may also be a short description of the test, or even a segment of it.
Check the References list at the end of the article for publication information about the test.
Searching for tests in ERIC:
The process is very similar, but in ERIC, look for the "Tests/Questionnaires" option in the "Publication Type" list.