Published tests are commercially available tests that are can be purchased through test publishers. Publishers hold the copyright to tests they distribute, and they maintain the copies of tests, test manuals, and scoring keys. Tests in Print (TIP), the Mental Measurements Yearbook (MMY), Tests, and Test Critiques are the four most useful and popular references.
Psychological measures are not limited to published tests; a gold mine of unpublished (or noncommercial) inventories, checklists, scales, projective techniques, and other instruments exist in the behavioral sciences literature and directories of unpublished or noncommercial tests and measures.
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