title: The effect of three variables on the verbal problem solving of educable mentally handicapped children.
mesh_terms: D000293:Adolescent; D001288:Attention; D001296:Audiovisual Aids; D002648:Child; D002657:Child Development; D003071:Cognition; D003479:Curriculum; D004495:Education of Persons with Intellectual Disabilities; D006801:Humans; D008607:Intellectual Disability; D007360:Intelligence; D007802:Language; D011340:Problem Solving; D013647:Task Performance and Analysis; D014705:Verbal Behavior; D014796:Visual Perception