Mental Measurements Yearbook with Tests in Print This link opens in a new windowProvides a comprehensive guide to over 2,000 contemporary testing instruments. MMY contains information essential for a complete evaluation of test products within such diverse areas as psychology, education, business, and leadership. Tests in Print serves as a comprehensive bibliography to all known commercially available tests that are currently in print in the English language. It provides vital information to users including test purpose, test publisher, in-print status, price, author, etc.