Mental Measurements Yearbook is a comprehensive guide to over 2,000 contemporary testing instruments. Tests in Print is a bibliography to all known commercially available tests that are currently in print in the English language.
"Mental Measurements Yearbook produced by the Buros Institute at the University of Nebraska, provides users with a comprehensive guide to over 2,000 contemporary testing instruments. Designed for an audience ranging from novice test consumers to experienced professionals, the MMY series contains information essential for a complete evaluation of test products within such diverse areas as psychology, education, business, and leadership. First published by Oscar K. Buros, the MMY series allows users to make knowledgeable judgments and informed selection decisions about the increasingly complex world of testing. MMY via EBSCOhost now includes the MMY Archive providing all yearbooks from the first edition in 1938, through the 18th yearbook released in 2010 raising the total number of full text reviews available on the product to over 7,000." "Also produced by the Buros Institute of Mental Measurements at the University of Nebraska, Tests in Print (TIP) serves as a comprehensive bibliography to all known commercially available tests that are currently in print in the English language. TIP provides vital information to users including test purpose, test publisher, in-print status, price, test acronym, intended test population, administration times, publication date(s), and test author(s)."
From the National Library of Medicine, information about research datasets and instruments in health services research, behavioral and social sciences, and public health. Some full text of instruments available if you follow through the links.
Intended to provide rapid access to measures of individual differences, all available in the public domain. A unique resource that is easy to navigate. Includes more than 325 scales placed into 200 or so content categories. Up front information on reliability and validity.