PsycINFO (a psychology database)
Line 1: Type keywords related to your topic
Line 2: Type the word "append" and select "TM Tests & Measures" from the menu
CINAHL (a health & nursing database)
Line 1: type keywords related to your topic and choose "IN Instrumentation" from the menu
OR...
Line 1: Type keywords related to your topic
Line 2: Type "questionnaire/scale" and choose "PT Publication Type" from the menu
ERIC (an education database)
Line 1: Type keywords related to your topic
Line 2: Types "tests/questionnaires" and choose "PU Publication Type" from the menu