title: Direction following of retarded and nonretarded adolescents.
mesh_terms: D000293:Adolescent; D002652:Child Behavior; D004495:Education of Persons with Intellectual Disabilities; D006801:Humans; D007100:Imitative Behavior; D007361:Intelligence Tests; D007802:Language; D008570:Memory, Short-Term; D009633:Nonverbal Communication; D012201:Reward; D014705:Verbal Behavior