Evidence for latent classes of IQ in young children with autism spectrum disorder.
Journal Article
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 IQbased 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.
Full Text
Duke Authors
Cited Authors
- Munson, J; Dawson, G; Sterling, L; Beauchaine, T; Zhou, A; Elizabeth, K; Lord, C; Rogers, S; Sigman, M; Estes, A; Abbott, R
Published Date
- November 2008
Published In
Volume / Issue
- 113 / 6
Start / End Page
- 439 - 452
PubMed ID
- 19127655
Pubmed Central ID
- 19127655
International Standard Serial Number (ISSN)
- 0895-8017
Digital Object Identifier (DOI)
- 10.1352/2008.113:439-452
Language
- eng
Conference Location
- United States