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ERIC Number: EJ1119260
Record Type: Journal
Publication Date: 2016-Nov
Pages: 14
Abstractor: As Provided
ISSN: ISSN-1944-7515
Construct Validation of the "Supports Intensity Scale--Children and Adult Versions": An Application of a Pseudo Multitrait-Multimethod Approach
Seo, Hyojeong; Shogren, Karrie A.; Little, Todd D.; Thompson, James R.; Wehmeyer, Michael L.
American Journal on Intellectual and Developmental Disabilities, v121 n6 p550-563 Nov 2016
This study examined the convergent validity of the "Supports Intensity Scale-Adult Version" (SIS-A; Thompson et al., 2015a) and "Supports Intensity Scale-Children's Version" (SIS-C; Thompson et al., 2016a). Data from SISOnline (n = 129,864) for the SIS-A and from the SIS-C standardization sample (n = 4,015) were used for analyses. Using a pseudo multitrait-multimethod model, we estimated observed support needs scores as shared trait (support needs concept) and method (type, frequency, and daily support time) variances. Overall, trait variances more strongly influenced support needs scores than method variances, supporting the convergent validity of both versions of SIS. Findings also suggested that each of three methods of measuring support needs uniquely contributed to observed support needs ratings although different patterns existed between the SIS-A and SIS-C.
American Association on Intellectual and Developmental Disabilities. P.O. Box 1897, Lawrence, KS 66044-1897. Tel: 785-843-1235; Fax: 785-843-1274; e-mail:; Web site:
Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Audience: N/A
Language: English
Sponsor: National Center for Special Education Research (ED)
Authoring Institution: N/A
IES Funded: Yes
Grant or Contract Numbers: R324A120407