After years of empirical research and theoretical activity, social scientists still do not agree about what mental illness actually is, let alone about what its primary causes are or about the efficacy of various treatments. Sociologists disagree about whether or not mental disorder is truly a disease that some people have and other people do not have, thus fitting a medical model of health and illness. They disagree about the relative importance of genetics, biochemical abnormalities, personality characteristics, and stress in the onset and course of psychiatric impairment. Most sociologists do, however, agree that definitions of mental illness are shaped by the historical, cultural, and interpersonal contexts within which they occur. They argue that the significance of any particular set of psychological or behavioral symptoms to a diagnosis of mental disorder lies in part with the actor and in part...