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: Previous research has reported on the effectiveness of the Signposts program for supporting families of children with an intellectual disability and difficult behaviour (Hudson et al., 2003; Hudson, Cameron, & Matthews, 2008). This paper reports on an investigation of the extent to which child characteristics moderate the…