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 specifi ed. 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 profi le seen in this group. Results suggest that the SIB-R could be useful as a source of diagnostically relevant information for individuals with ASDs.

Patterns of adaptive performance by individuals with autism spectrum disorders on the Behavior Assessment System for Children II (BASC-2)

“…It is noteworthy that these are not statistically significant differences. As such, unlike those reported in Brown et al [17] , these differences did not correlate with diagnostic intensity and did not support our hypothesis.…”

“…Meanwhile, no significant difference was found between those with PDD-NOS and AS. This result did not reflect the same pattern exhibited in Brown et al [17] ; therefore, it did not confirm our hypothesis.…”

“…While the research comparing adaptive scores between the diagnostic groups of individuals with ASDs is limited, these results appear to be different from previous findings, which indicate that individuals with autism may display more difficulty in this area compared with those with AS or PDD-NOS [17] . However, discrepancy score differences for each diagnosis may reflect a more uneven profile of abilities for those with less severe diagnoses than those with autistic disorder diagnosis, rather than overall adaptive functioning.…”

“…Despite these results, there were patterns that echoed the findings of Brown et al [17] . For example, Social skills and Leadership subscale scores were the highest cluster scores for those with the least intense diagnosis (PDD-NOS), followed by those with AS, and those with autistic disorder.…”

“…Research by Brown et al [17] revealed that large discrepancies in adaptive behavior profiles on the SIB-R exist in individuals with ASDs. Specifically, results indicated significant differences in adaptive behavior cluster scores among individuals with autistic disorder, AS, and PDD-NOS.…”