[영문]This article describes the experience of a social work mentalhealth agency with Social Role Theory (SRT), that is an organizingconcept for the delivery of its assessment and treatment program.SRT has been called the process variable of the program,meaning how services are delivered. Social functioning, a concepttaken from SRT, is a treatment outcome. The overall purposesof the article are to describe the contribution of sociologyto social work practice, and to advance the argument that socialfunctioning is a common base for social work practice generally.