Health and Psychosocial Instruments (HaPI) This link opens in a new windowHAPI is a source for locating or reviewing health and psychosocial measurement instruments. It is an index to journal articles and other sources about measurement tools used in in the health fields, psychosocial sciences, organizational behavior, and library and information science. HAPI includes citations to questionnaires, interview schedules, checklists, index measures, coding schemes/ manuals, rating scales, projective techniques, vignettes/scenarios, tests.