Noncompliance with adult instruction is a common problem exhibited by individuals diagnosed with intellectual and developmental disabilities. The high-probability (high-p) request sequence was designed to increase compliance with low-probability (low-p) instructions by rapidly presenting high-p instructions immediately prior to the targeted low-p…

Although functional analysis (FA) remains the standard for identifying the function of problem behavior for students with developmental disabilities, traditional FA procedures are typically costly in terms of time, resources, and perceived risks. Preliminary research suggests that trial-based FA may be a less costly alternative. The purpose of…

The aim of this study was to validate a questionnaire on academic competence behaviour for use with Chinese preschool children in Hong Kong. A parent version and a teacher version were developed and evaluated. The participants included 457 children (230 boys and 227 girls) aged four and five years old, their preschool teachers and their parents.…

The aim of this project was to develop and validate a Service Needs Questionnaire (SNQ) on the service needs of families with children with developmental disabilities. The SNQ and a measure of parenting stress were administered to 105 parents of children diagnosed with learning/behaviour problems and 233 parents of children attending primary…

Studies on the distinction between Autistic Disorder (AD) and Pervasive Developmental Disorder Not Otherwise Specified (PDD-NOS) have been inconclusive. This study examined the validity of PDD-NOS by comparing it to AD and other developmental disorders (DD) on parent-reported behavior problems. Fifty-four children with PDD-NOS were individually…

The current study aimed to replicate and extend Rojahn et al. [Rojahn, J., Aman, M. G., Matson, J. L., & Mayville, E. (2003). "The aberrant behavior checklist and the behavior problems inventory: Convergent and divergent validity." "Research in Developmental Disabilities", 24, 391-404] by examining the convergent validity of the behavior problems…

This meta-analysis of the developmental disabilities literature on remediation of problem behaviors evaluated relations between standards of practice, intervention and participant characteristics, and treatment validity. Results largely failed to support widespread assumptions of clinical practice such as the superiority of more intrusive…

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…

This paper explores the reasonableness of expecting conventional experimental methodologies and research reports on behavioral interventions for persons with developmental disabilities to both support the validity of promising practices and guide the efforts of practitioners to implement those practices. New directions for research and practice…