Reporting on numerous experiences with group therapy for geriatric patients led by co-therapists, the authors conclude that activity results in joie de vivre, while passivity breeds paralysis, pessimism, and poor circulation, which in turn are worsened by isolation and depression. Exercise and capacity for learning and activity enhance and prolong functioning. Patients who started treatment with psychic and emotional decompensation because of realistic stress tended to recover through group contact. Helping others increased a sense of self-worth so that general improvement ensued and treatment could be terminated. Patients with severe and chronic brain syndromes were enabled to defer hospitalization by participation in the day-care activity program. Group participation reduced the anxiety and depression resulting from physical disorders that impaired self-image and body image. Interpersonal activity and involvement with others diminished isolation, regression, and despair.