Background: Traditional treatment for the behavioural symptoms in autism spectrum disorder (ASD) remains unsatisfactory. There is an urgent need for new, biologically relevant therapies that target both the core and comorbid symptoms that children may experience. This article builds on research previously published by the authors. Method: We…

Background: While there have been several evaluations of programs to help parents manage difficult behaviour of their child with an intellectual disability, little research has focused on the evaluation of such programs when delivered to large populations. Method: The benchmarks recommended by Wiese, Stancliffe, and Hemsley (2005) were used to…

Background: This study described similarities and differences in the 5-year stability and change of problem behaviour between youths attending schools for children with mild to borderline (MiID) versus moderate intellectual disabilities (MoID). Methods: A two-wave multiple-birth-cohort sample of 6 to 18-year-old was assessed twice across a 5-year…