The oddity concept in severely retarded children.
D000293:Adolescent; D000328:Adult; D000704:Analysis of Variance; D001925:Brain Damage, Chronic; D002648:Child; D005260:Female; D006801:Humans; D008607:Intellectual Disability; D008297:Male; D011340:Problem Solving; D011581:Psychological Tests; D012054:Reinforcement, Psychology