A substantial percentage of nursing home residents evidence psychosocial and behavioral problems. However, surprisingly little is known about how effectively to treat geriatric patients with behavioral problems. The present study reports the behavioral treatment of a patient with psychogenic vomiting. The patient was successfully treated by changing the contingencies of her illness behavior and of behavior associated with rehabilitation goals. This indicates the importance of nursing home staff attending to the operants of illness behavior. Specifically, independent behavior should be rewarded by praise and attention and illness behavior should be ignored in terms of attention.