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Difficulties with emotion regulation are common in children with autism. Although interventions targeting emotion regulation show promise, children’s individual treatment responses vary, and it is important to understand the factors that contribute to treatment change. The present study aimed to identify pre-treatment child characteristics and parent psychopathology that predict treatment response in a 10-week manualized cognitive behaviour therapy intervention for children with autism, 8–12 years of age. Exploratory best-subset regression analyses were first carried out to identify the optimal set of predictors. Logistic regressions were then conducted to determine whether these variables predicted reliable improvement. Outcome variables consisted of the lability/negativity and the emotion regulation subscales of the Emotion Regulation Checklist. Predictors included pre-treatment developmental, clinical, and parent psychopathology variables. Analyses revealed that youth who started the treatment with higher verbal reasoning, higher impairment in social motivation, and more anxious parents were more likely to show reliable improvements in emotion regulation. Youth who started the treatment with higher internalizing scores had lower odds of showing reliable improvement. Implications of our findings include facilitation of active involvement, avoidance of complex language, and the provision of additional supports. Further suggestions to inform clinical practice are discussed. Lay abstract Children with autism commonly experience difficulty controlling their emotions. Although existing treatments are successful in teaching critical emotion regulation skills, not all children improve. It is important to identify the factors that influence treatment response to be able to reach more children. This study aimed to identify child and parent characteristics that predict treatment response in a 10-week cognitive behaviour therapy treatment for children with autism, 8–12 years of age, and their parents. We found that youth who started the treatment with higher verbal abilities, who were more anxious in social situations, and had parents who were more anxious, were more likely to improve in learning new emotion regulation skills. We also found that children who had more physical discomforts or complaints before starting the treatment were less likely to improve in their negative expressions of emotion. Our study suggests that it is important for clinicians to promote active involvement and learning by avoiding complex language and to use more visual materials to supplement the learning process, and make sure that sessions are sensitive to the individual needs of participants.

Background Many youth with neurodevelopmental disorders (NDDs) experience mental health problems such as anxiety, depression or anger, and these are often associated with impairments of cognition and emotion regulation. The mechanisms that may be linking cognitive difficulties, emotion regulation and mental health are not known. Aims The current study examined whether adaptive and maladaptive (dysregulated) emotion regulation mediated the link between different cognitive control processes (working memory, inhibition and shifting) and internalizing/externalizing symptoms in children with NDDs. Methods Participants included 48 children (8–13 years of age) with one or more diagnoses of autism, attention deficit hyperactivity disorder, cerebral palsy and learning disability, who were enrolled in a larger study of cognitive behaviour therapy targeting emotion regulation. Multiple mediation analyses were implemented using the PROCESS macro. The mediation effects of adaptive and maladaptive emotion regulation were examined on the relationships between (1) working memory and internalizing/externalizing symptoms, (2) inhibition and internalizing/externalizing symptoms and (3) shifting and internalizing/externalizing symptoms. All data were collected prior to intervention, at baseline. Results Shifting, inhibitory control and working memory predicted increased emotion dysregulation, which functioned as a full mediator to both internalizing and externalizing problems in children with NDDs. Conclusions In the presence of emotionally triggering situations, children with greater cognitive challenges experience greater maladaptive emotion regulation, which results in both internalizing and externalizing problems. For youth with NDDs, therapeutic plans that include strengthening of working memory, inhibition and shifting abilities in addition to emotion regulation skills training may be helpful in alleviating externalizing and internalizing behaviour.