Background: The aim of this study was to reevaluate the reliability (internal consistency, inter-rater and re-test) and the factor structure of the Behavior Problems Inventory (BPI-01) with adults with intellectual disabilities who resided in a state-run developmental centre. Methods: BPI-01 was administered to informants who had known…

The success of early intervention programs has in large part spurred increasing emphasis on identifying children with autism and Pervasive Developmental Disorder-Not Otherwise Specified (PDD-NOS) at the earliest possible ages. National and international professional groups have called for early screening and diagnosis, yet the technology to…

A considerable amount of attention has occurred with respect to the diagnosis and treatment of Autism Spectrum Disorders (ASDs) of children and youth. Furthermore, the rationale for using the most restrictive of the applied behavior analysis methods and medication has been largely based on the presence of severe challenging behaviors such as…

Background: The "Questions About Behavioral Function" (QABF) correctly identifies maintaining variables of challenging behaviour. However, for adults who have a long history of challenging behaviours, identifying one clear function of the maladaptive behaviour is difficult. Additionally, the person may develop multiple functions of their…

The "Behavior Problems Inventory" (BPI) is a behavior rating instrument for self-injurious, stereotypic, and aggressive/destructive behavior in mental retardation and other developmental disabilities. Evaluation with 432 residents in a developmental center found the BPI to be a reliable (retest reliability, internal consistency, and…