The Pervasive Developmental Disorder-Not Otherwise Specified (PDD-NOS) category is a psychopathological entity few have described and is poorly, and mainly negatively, defined by autism exclusion. In order to limit PDD-NOS heterogeneity, alternative clinical constructs have been developed. This study explored the reliability and the diagnostic…

We examined the psychometric properties of the behavior flexibility rating scale-revised (BFRS-R), a new scale intended for assessing behavioral flexibility in individuals with developmental disabilities. Seventy-six direct care staff members and 56 parents completed the BFRS-R for 70 children with developmental disabilities. Factor analysis…

Problem behavior is a primary barrier to successful community inclusion for people with developmental disabilities and therefore a major priority for intervention efforts. Recently, researchers and clinicians have begun to focus on the systematic assessment of a broad range of contextual variables that purportedly affect problem behavior. In the…