HaPI is a bibliographic database that contains over 240,000 records providing detailed, comprehensive information about behavioral and psychosocial measurement tools for researchers across diverse disciplines and professions. For nearly four decades, HaPI has been the premier instrument database for health and psychological measurement instruments in the fields of medicine, nursing, psychology, public health, social work, communication, and sociology.

At Behavioral Database Measurement Services (BMDS), we are dedicated to helping researchers, students, and practitioners locate questionnaires, interviews, surveys, and other tests most relevant to their investigations, grant proposals, papers, theses, and dissertations. Records in the HaPI database describe what various instruments are designed to assess, along with response formats, sample items, psychometric properties, and much more. By providing researchers with access to a vast, unparalleled selection of measurement tools, our goal is to help our database patrons to enhance the quality, reliability, and validity of their measurement techniques.