Comparisons of the Factor Structure and Measurement Invariance of the Spence Children's Anxiety Scale-Parent Version in Children with Autism Spectrum Disorder and Typically Developing Anxious Children

• Type of Material: Article
• Authors: Magdalena Glod, Newcastle University; Cathy Creswell, University of Reading; Polly Waite, University of Reading; Ruth Jamieson, Newcastle University; Helen McConachie, Newcastle University; Mikle South, Emory University; Jacqui Rodgers, Newcastle University
• Language: English
• Date: 2017-12-01
• Publisher: SPRINGER/PLENUM PUBLISHERS
• Publication Version: Final Published Version
• Copyright Statement: © The Author(s) 2017
• License: Creative Commons Attribution 4.0 International
• Final Published Version (URL): http://dx.doi.org/10.1007/s10803-017-3118-0
• Title of Journal or Parent Work: JOURNAL OF AUTISM AND DEVELOPMENTAL DISORDERS
• Volume: 47
• Issue: 12
• Start Page: 3834
• End Page: 3846
• Keywords: Social Sciences; ASPERGER-SYNDROME; Measurement invariance; SAMPLE; PERSONALITY; OF-FIT INDEXES; YOUNG-PEOPLE; Anxiety; Anxiety disorders; Psychology, Developmental; SCAS-P; PSYCHOMETRIC PROPERTIES; RELIABILITY; Autism spectrum disorder; SYMPTOMS; ADOLESCENTS; Psychology; YOUTH
• Research Categories: Psychology, Behavioral; Psychology, Developmental

Abstract

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.