PsycTESTS provides access to primarily unpublished tests developed by researchers but not made commercially available. All records include a summary of the test as well as the history of its development. What sets PsycTESTS apart is, in many cases, the inclusion of the actual testing instrument.
Mental Measurements Yearbook describes more than 2,000 standardized English-language tests that assess personality, aptitude, achievement, intelligence, and other neuropsychological behavior. As the tests are commercially available, only the descriptive material and reviews are available full-text. Coverage is 1989 - present.