• 1 January 1982
    • journal article
    • research article
    • Vol. 87  (2) , 147-152
Abstract
Factor scores on the Wechsler Intelligence Scale for Children-Revised (WISC-R) were compared for 2 groups of cultural-familial mentally retarded youth and 1 group of nonretarded youth. The younger retarded group had a mean CA [chronological age] of 9.5 yr; the older retarded group had a mean WISC-R MA [mental age] of 9.5 yr and the nonretarded group had a mean WISC-R MA and a mean CA of 9.5 yr. No significant difference was detected between the retarded and nonretarded groups in their patterns of intellectual strengths and weaknesses. This finding was consistent with an expectation of the developmental viewpoint of retardation but contrary to a prediction of the difference theory of retardation. Differences were found between the retarded groups in their intellectual strengths and weaknesses. The older retarded subjects exhibited a relative strength in perceptual organization abilities, whereas the younger ones demonstrated no pattern of comparative strengths and weaknesses.

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