Autistic children rate cognitive behavioral therapy (CBT) as less effective for their anxiety than do parents, clinicians
An effect size of 0.2 is considered small, 0.5 is moderate, and 0.8 is large. Negative effect sizes favor the control treatment over CBT.
A plot showing the ratings that clinicians, parents and children gave to cognitive behavioral therapy for treating anxiety in autistic children. Across the studies, children gave CBT the lowest ratings, on average, compared to clinicians and parents.
Data are based on a meta-analysis of 19 randomized controlled trials that assessed the efficacy of using cognitive behavioral therapy to reduce anxiety in autistic youth. Even if you remove the 2009 study, treating it as an outlier, clinician effect sizes are 0.4 points higher, on average, than effect sizes calculated from child ratings.