The validity of the Supports Intensity Scale for adults with psychiatric disabilities

Gudmundur Arnkelsson*, Tryggvi Sigurdsson

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


Although the Supports Intensity Scale (SIS) was developed for persons with intellectual and developmental disabilities, we argue for its applicability for people with psychiatric disabilities. Previous empirical evidence for the criterion-related validity of SIS for this population is limited, based on only two studies with participants from the same Mexican state. In a nationwide study we found that SIS explained between 48 and 51% of the variance in the dependent measure, indicating very good validity. The profile of individual support needs showed sensitivity to activities relatively specific to people with psychiatric disabilities, further indicating the validity of the scale. Overall, we find SIS to be valid and appropriate instrument for assessing the support needs of this population.

Original languageEnglish
Pages (from-to)3665-3671
Number of pages7
JournalResearch in Developmental Disabilities
Issue number12
Publication statusPublished - 1 Dec 2014

Bibliographical note

Funding Information:
The research was funded by the State Diagnostic and Counselling Centre .

Publisher Copyright:
© 2014 Elsevier Ltd.

Other keywords

  • Psychiatric disability
  • Supports
  • Supports Intensity Scale
  • Validity


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