Health & Psychosocial Instruments (HaPI) This link opens in a new windowfeatures material on unpublished information-gathering tools for clinicians that are discussed in journal articles, such as questionnaires, interview schedules, tests, checklists, rating and other scales, coding schemes, and projective techniques. Over 2/3 of the tools are in medical and nursing areas such pain measurement, quality of life assessment, and drug efficacy evaluation.