title: Distribution of rewards by mentally retarded individuals in a cost and no-cost situation.
mesh_terms: D000328:Adult; D002675:Child, Preschool; D006801:Humans; D008607:Intellectual Disability / Q000145:classification; D007361:Intelligence Tests; D007398:Interpersonal Relations; D008297:Male; D008875:Middle Aged; D012056:Reinforcement, Social; D012201:Reward; D012919:Social Behavior