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J Autism Dev Disord. 2019 Jul;49(7):2733-2746. doi: 10.1007/s10803-016-2936-9.

Factor Analysis of the Childhood Autism Rating Scale in a Sample of Two Year Olds with an Autism Spectrum Disorder.

Author information

1
Department of Psychological Sciences, University of Connecticut, Storrs, CT, USA. Emily.Moulton@uconn.edu.
2
Department of Psychological Sciences, University of Connecticut, Storrs, CT, USA.

Abstract

The Childhood Autism Rating Scale (CARS), (Schopler et al. in J Autism Dev Disord 10(1):91-103, 1980) is a 15-item observation-based rating scale that yields a total score reflective of autism symptom severity. This study investigated the factor structure of the CARS in a sample of 2-year-old children with DSM-IV-TR (American Psychiatric Association in Diagnostic and statistical manual of mental disorders, 4th edn. American Psychiatric Publishing, Washington, 2000) diagnoses of AD or PDD-NOS. Following a preliminary internal cross-validation, principal axis factor analysis was completed (N = 282). The results indicate a three-factor solution: Social Communication, Stereotyped Behaviors and Sensory Sensitivities, and Emotional Reactivity. The factors are meaningful, with the first two reflective of DSM-5 symptom domains. This study supports the continued relevance of the CARS in ASD assessment, and extends its utility in 2-year-old children.

KEYWORDS:

ASD assessment; CARS; Factor analysis

PMID:
27743321
PMCID:
PMC5392181
[Available on 2020-07-01]
DOI:
10.1007/s10803-016-2936-9
[Indexed for MEDLINE]

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