title: Operant therapy for prehension disabilities in moderately and severely retarded young children.
mesh_terms: D001521:Behavior Therapy; D002648:Child; D002657:Child Development; D002675:Child, Preschool; D003216:Conditioning, Operant; D006233:Persons with Disabilities; D004495:Education of Persons with Intellectual Disabilities; D006801:Humans; D008607:Intellectual Disability / Q000628:therapy*; D009048:Motor Skills