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Peer reviewedDeutsch, Curtis K.; Joseph, Robert M. – Journal of Autism and Developmental Disorders, 2003
A study examined the frequency and cognitive correlates of enlarged head circumference in 63 children with autism (ages 4-14). Macrocephaly occurred at a significantly higher frequency. Children with discrepantly high nonverbal abilities had a mean standardized head circumference that was more than 1 standard deviation greater than the reference…
Descriptors: Autism, Cognitive Ability, Elementary Secondary Education, Intelligence Differences
Peer reviewedBoutin, Pierrette; And Others – Journal of Autism and Developmental Disorders, 1997
A Canadian study compared the rate of cognitive disabilities in 156 relatives of 49 individuals with autism to that found in 55 relatives of 18 individuals with mental retardation. No differences were found; however, female and low IQ individuals were found to have higher family histories of cognitive disabilities. (Author/CR)
Descriptors: Adults, Autism, Cognitive Ability, Family Characteristics
Peer reviewedLiss, Miriam; Harel, Brian; Fein, Deborah; Allen, Doris; Dunn, Michelle; Feinstein, Carl; Morris, Robin; Waterhouse, Lynn; Rapin, Isabel – Journal of Autism and Developmental Disorders, 2001
A study involving 35 children (age 9) with high-functioning autism, 31 children with developmental language disorder, 40 children with low-functioning autism, and 17 children with low IQ, found IQ was predictive of adaptive behavior in both low-functioning groups, but language and verbal memory predicted adaptive behavior in higher functioning…
Descriptors: Adaptive Behavior (of Disabled), Autism, Children, Cognitive Ability
