Produced by Behavioral Measurement Database Services, HaPI is a comprehensive bibliographic database providing information about behavioral measurement instruments. Information in the database is abstracted from hundreds of leading journals covering health sciences and psychosocial sciences.

Additionally, instruments from Industrial/Organizational Behavior and Education are included. Records contained in HaPI provide information on questionnaires, interview schedules, vignettes/scenarios, coding schemes, rating and other scales, checklists, indexes, tests, projective techniques, and more.