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The Spence Children's Anxiety Scale-Parent version (SCAS-P) is often used to assess anxiety in children with autism spectrum disorder (ASD), however, little is known about the validity of the tool in this population. The aim of this study was to determine whether the SCAS-P has the same factorial validity in a sample of young people with ASD (n = 285), compared to a sample of typically developing young people with anxiety disorders (n = 224). Poor model fit with all of the six hypothesised models precluded invariance testing. Exploratory factor analysis indicated that different anxiety phenomenology characterises the two samples. The findings suggest that cross-group comparisons between ASD and anxious samples based on the SCAS-P scores may not always be appropriate.

Original publication

DOI

10.1007/s10803-017-3118-0

Type

Journal article

Journal

J Autism Dev Disord

Publication Date

12/2017

Volume

47

Pages

3834 - 3846

Keywords

Anxiety, Anxiety disorders, Autism spectrum disorder, Measurement invariance, SCAS-P, Adolescent, Anxiety Disorders, Autism Spectrum Disorder, Child, Factor Analysis, Statistical, Female, Humans, Male, Psychiatric Status Rating Scales, Psychometrics, Reproducibility of Results