Use of opposition concept and outerdirectedness in intellectually-average, familial retarded, and organically retarded children.
D000367:Age Factors; D000704:Analysis of Variance; D002648:Child; D003210:Concept Formation; D003463:Cues; D004495:Education of Persons with Intellectual Disabilities; D005120:Extraversion, Psychological; D005260:Female; D005795:Generalization, Stimulus; D006801:Humans; D008607:Intellectual Disability / Q000209:etiology / Q000235:genetics; D008297:Male; D011340:Problem Solving; D014163:Transfer, Psychology; D014705:Verbal Behavior