Several social science databases enable users to search for articles that include tests/measures. Searching for additional journal articles is especially helpful if your research topic is interdisciplinary, or is not well-covered by PsycTESTS.
For most databases, use the "subject headings" or "thesaurus" feature to explore recommended search terms. Possible words to try include "questionnaires," "measures," "surveys," and "tests."
Here are some tips for specific databases: