“…Comorbid emotional and behavioural problems in children with ID are chronic if left untreated (Richardson & Koller, ) and can significantly impact upon future opportunities (Anderson, Lakin, Hill, & Chen, ; Parmenter, Einfeld, Tonge, & Dempster, ). Historically, it has been argued that people with ID were unable to engage in cognitive‐based psychological therapy due to cognitive deficits (Adams & Boyd, ; Butz, Bowling, & Bliss, ; Sturmey, Lott, Laud, & Matson, ) with mental health interventions largely involving medication and behavioural techniques (Vereenooghe & Langdon, ). The need for adapting cognitive behaviour therapy (CBT) for adults with ID has been addressed (e.g., Willner & Lindsay, ), and recent studies have found CBT successful in treating mental health difficulties in adults with ID (e.g., Nicoll, Beail, & Saxon, ; Osugo & Cooper, ; Vereenooghe & Langdon, ), supporting its potential with younger age groups.…”