title: COMPARATIVE PERFORMANCE OF NORMALS AND RETARDATES OF THE SAME MENTAL AGE ON CERTAIN PSYCHOLOGICAL TASKS.
mesh_terms: D000293:Adolescent; D002648:Child; D006801:Humans; D007088:Illusions; D008607:Intellectual Disability; D007360:Intelligence; D010153:Paired-Associate Learning; D011581:Psychological Tests; D012858:Size Perception
keywords: ADOLESCENCE; CHILD; ILLUSIONS; MENTAL RETARDATION; PAIRED-ASSOCIATE LEARNING; PSYCHOLOGICAL TESTS; SIZE PERCEPTION