Weight reduction through successive contracts.
D000342:Affective Symptoms / Q000628:therapy; D001521:Behavior Therapy; D002648:Child; D003376:Counseling; D004038:Diet, Reducing; D006801:Humans; D007398:Interpersonal Relations; D008297:Male; D009042:Motivation; D009765:Obesity / Q000628:therapy*; D012054:Reinforcement, Psychology