APA Dictionary of Psychology

a telephone survey of mental disorders carried out in two waves from 1980 to 1985 using DSM–III and the Diagnostic Interview Schedule (DIS). More than 20,000 people were surveyed in households, group homes, and long-term care institutions across the United States to obtain information on the prevalence and incidence of mental disorders, the use of services for mental health problems, and the extent to which those with mental disorders were underserved.