The purpose of the DISC is to collect information on how having a diagnosis of mental illness influences an individual’s personal and social life. This interview-based instrument collects quantitative and qualitative experiences of discrimination in key areas of everyday life and social participation, including work, marriage, parenting, housing, leisure, and religious activities. It also considers the extent to which participants limit their involvement in areas of life due to anticipated discrimination. The DISC is designed for use by a trained interviewer and the ratings are those reported by the mental health service user.