Psychometric assessment of first-degree relatives of 62 autistic probands in Utah (original) (raw)
Publication: American Journal of Psychiatry
Abstract
The Wechsler Intelligence Scales, Wide Range Achievement Test, and the Shipley-Hartford Test were administered to 122 parents and 153 siblings of 62 autistic probands in Utah. Scores were distributed as expected within the published normative ranges for each scale. Parents' scores correlated with those of their nonautistic children, but neither parents' nor siblings' scores correlated with the IQ level of the autistic probands. These results do not confirm prior reports from England and the United States of a high rate of cognitive and learning problems in the siblings of autistic individuals, nor the aggregation of such problems in the siblings of probands with high or low levels of cognitive function.
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American Journal of Psychiatry
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Published in print: March 1989
Published online: 1 April 2006
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