Examining the Reliability and Validity of the Supports Intensity Scale–Children’s Version in Children With Autism and Intellectual Disability

Karrie A. Shogren, Michael L. Wehmeyer, Hyojeong Seo, James R. Thompson, Robert L. Schalock, Carolyn Hughes, Todd D. Little, Susan B. Palmer

Research output: Contribution to journalArticle

11 Scopus citations

Abstract

This study compared the reliability, validity, and measurement properties of the Supports Intensity Scale–Children’s Version (SIS-C) in children with autism and intellectual disability (n = 2,124) and children with intellectual disability only (n = 1,861). The results suggest that SIS-C is a valid and reliable tool in both populations. Furthermore, the results of multi-group confirmatory factor analyses suggest that measurement invariance can be established across the two groups but that latent differences are present. Specifically, children with autism and intellectual disability tend to have higher intensities of support needs in social activities across age cohorts (5- to 6-, 7- to 8-, 9- to 10-, 11- to 12-, 13- to 14, and 15- to 16-year-olds), and children with intellectual disability only tended to have stronger correlations among support need domains measured on the SIS-C. Implications for applying the SIS-C to assessment and support planning are described.

Original languageEnglish
Pages (from-to)293-304
Number of pages12
JournalFocus on Autism and Other Developmental Disabilities
Volume32
Issue number4
DOIs
StatePublished - Dec 1 2017

Keywords

  • individualized planning
  • intellectual disability
  • supports needs

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