PsycTESTS is a unique repository that makes it easy to download ready-to-use research instruments, including a wide range of reliable measures originally developed for research but never made commercially available. It is updated monthly. Each test instrument includes a master test record accompanied by at least one additional record highlighting development, reliability and validity, or use.

Subject coverage is exhaustive. Some of the areas included are developmental measures; scales for beliefs, relationships, or expectancies; racial and ethnic identity scales; physical health-related assessments; educational measures; neuropsychological assessments; and aptitude and achievement measures.