Patterns of adaptive performance by individuals with autism spectrum disorders on the Scales of Independent Behavior-Revised (SIB-R)

Abstract

There has been an increase in the past several years of the number of people diagnosed with an autism spectrum disorder (ASD). Autism spectrum diagnoses include autism, Asperger’s Disorder, and pervasive developmental disorder not otherwise specified. There are several measures of adaptive functioning that are given to individuals with an ASD, but one that is not often used is the Scales of Independent Behavior-Revised (SIB-R). The 25 participants in this study were clients from a psychology clinic and a private psychology practice; all data obtained were archival. This study examines subscores on the SIB-R and their correlations between Full IQ scores and Verbal IQ scores, to assess the convergent, discriminant, and concurrent validity of the SIB-R with ASD clients and to describe the typical profile seen in this group. Results suggest that the SIB-R could be useful as a source of diagnostically relevant information for individuals with ASDs.