Over 300 patients have been treated on an inpatient psychosomatic service employing a learning model of chronic illness behavior. This model stresses social reinforcement and avoidance of occupational and social activities in the development of a syndrome characterized by somatic complaints and care-eliciting interpersonal behaviors. Preliminary studies showed that patients reinforced others for care-giving responses but showed improved tolerance of experimental pain and lower rates of drug use when care-taking responses were minimized and self-control encouraged. Treatment was designed to involve the patient in his own care, including behavior modification techniques to reduce symptomatology, social skills training, and family therapy. One-year follow-up shows that most patients achieve self-set goals, with generalization of beneficial treatment effects. Patients who return to an intact family show continuing decreases in somatic complaints and increases in achievement orientation. Treatment failures are characterized by lack of an intact family and return to the medical care system.