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Journal article
Modifying the social responsiveness scale for adaptive administration
Quality of life research
21 Mar 2023
PMID: 36943606
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
The social responsiveness scale (SRS) is frequently used to quantify the autism-related phenotype and is gaining use in health outcomes research. However, it has a high respondent burden (65 items) for large-scale studies. Further, most evaluations of it have focused on the school-age form, not the preschool form. More validity evidence of shortened forms is necessary in the general population to support the broader health outcomes context of use.
We evaluated the psychometrics of the SRS in 7030 individuals from multiple predominantly neurotypical samples in order to shorten it based on non-autistic sample metrics. Analyses included item factor analysis, differential item functioning (DIF), and multiple-group item response theory (IRT) to place the SRS items on a comparable scale, which was then simulated via computer adaptive testing (CAT) administration.
The SRS was broadly unidimensional with few methodological residual dependencies. On average, males had more autistic characteristics than females, and preschoolers had fewer characteristics than school-age children. The final IRT calibration included 45 items equated across forms, and each form had 11 with significant wording discrepancies and 9 items with near-identical wording that exhibited form-related DIF. The CAT simulation suggested a median of 14 items was sufficient to reach a reliable score, demonstrating its feasibility across the range of impairments.
IRT allows practitioners the ability to get highly reliable scores with fewer items than the full-length SRS. This supports the future application of the SRS in a computer adaptive testing mode in both neurotypical and ASD samples.
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Details
- Title
- Modifying the social responsiveness scale for adaptive administration
- Creators
- Aaron J Kaat (Corresponding Author) - Northwestern UniversityLisa A Croen - Kaiser PermanenteJohn Constantino - Washington University in St. Louis School of MedicineCraig J Newshaffer - Pennsylvania State UniversityKristen Lyall - Drexel University
- Publication Details
- Quality of life research
- Publisher
- Springer Nature
- Grant note
- U2COD023375 / NIH Office of the Director 1UG3OD023271 / NIH Office of the Director UG3/UH3OD023328 / NIH Office of the Director 5UH3OD023348 / NIH Office of the Director 4UH3OD023305 / NIH Office of the Director R01HD055741 / Eunice Kennedy Shriver National Institute of Child Health and Human Development P01ES022832 / National Institute for Environmental Studies UH3OD023275 / NIH Office of the Director UG3/UH3OD023286 / NIH Office of the Director R01MH068398 / NIMH NIH HHS R01ES25169 / NIEHS NIH HHS 1UG3OD023305 / NIH Office of the Director UG3/UH3OD023365 / NIH Office of the Director EPA: RD83544201 / U.S. Environmental Protection Agency U24OD023382 / NIH Office of the Director U24OD023319 / NIH Office of the Director R01ES016863 / NIEHS NIH HHS R01HD057284 / Eunice Kennedy Shriver National Institute of Child Health and Human Development UH3OD023342 / NIH Office of the Director 4UH3OD023271 / NIH Office of the Director
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- A.J. Drexel Autism Institute
- Web of Science ID
- WOS:000954187300001
- Scopus ID
- 2-s2.0-85150470420
- Other Identifier
- 991020234957604721
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- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Health Care Sciences & Services
- Health Policy & Services
- Public, Environmental & Occupational Health