TY - JOUR
T1 - Evidence for latent classes of IQ in young children with autism spectrum disorder
AU - Munson, Jeffrey
AU - Dawson, Geraldine
AU - Sterling, Lindsey
AU - Beauchaine, Theodore
AU - Zhou, Andrew
AU - Koehler, Elizabeth
AU - Lord, Catherine
AU - Rogers, Sally J
AU - Sigman, Marian
AU - Estes, Annette
AU - Abbott, Robert
PY - 2008/11
Y1 - 2008/11
N2 - Autism is currently viewed as a spectrum condition that includes strikingly different severity levels; IQ is consistently described as one of the primary aspects of the heterogeneity in autism. To investigate the possibility of more than one distinct subtype of autism based on IQ, both latent class analysis and taxometrics methods were used to classify Mullen IQs in a sample of 456 children with autism spectrum disorder. We found evidence for multiple IQ-based subgroups using both methods. Groups differed in level of intellectual functioning and patterns of verbal versus nonverbal ability. Results support the notion of distinct subtypes of autism that differ in severity of intellectual ability, patterns of cognitive strengths and weaknesses, and severity of autism symptoms.
AB - Autism is currently viewed as a spectrum condition that includes strikingly different severity levels; IQ is consistently described as one of the primary aspects of the heterogeneity in autism. To investigate the possibility of more than one distinct subtype of autism based on IQ, both latent class analysis and taxometrics methods were used to classify Mullen IQs in a sample of 456 children with autism spectrum disorder. We found evidence for multiple IQ-based subgroups using both methods. Groups differed in level of intellectual functioning and patterns of verbal versus nonverbal ability. Results support the notion of distinct subtypes of autism that differ in severity of intellectual ability, patterns of cognitive strengths and weaknesses, and severity of autism symptoms.
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U2 - 10.1352/2008.113:439-452
DO - 10.1352/2008.113:439-452
M3 - Article
C2 - 19127655
AN - SCOPUS:56649098806
VL - 113
SP - 439
EP - 452
JO - American Journal on Mental Retardation
JF - American Journal on Mental Retardation
SN - 1944-7558
IS - 6
ER -