Journal
JOURNAL OF AUTISM AND DEVELOPMENTAL DISORDERS
Volume 39, Issue 11, Pages 1613-1619Publisher
SPRINGER/PLENUM PUBLISHERS
DOI: 10.1007/s10803-009-0795-3
Keywords
Autism; Cognitive profiles; IQ; Symptomatology; Adaptive functioning; Asperger syndrome
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We investigated the relationship of discrepancies between VIQ and NVIQ (IQ split) to autism symptoms and adaptive behavior in a sample of high-functioning (mean FSIQ = 98.5) school-age children with autism spectrum disorders divided into three groups: discrepantly high VIQ (n = 18); discrepantly high NVIQ (n = 24); and equivalent VIQ and NVIQ (n = 36). Discrepantly high VIQ and NVIQ were associated with autism social symptoms but not communication symptoms or repetitive behaviors. Higher VIQ and NVIQ were associated with better adaptive communication but not socialization or Daily Living Skills. IQ discrepancy may be an important phenotypic marker in autism. Although better verbal abilities are associated with better functional outcomes in autism, discrepantly high VIQ in high-functioning children may also be associated with social difficulties.
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