Childhood Executive Function Predicts Internalizing and Externalizing Symptoms in Emerging Adults With and Without Autism A 10-Year Longitudinal Study

Individuals with autism spectrum disorder (ASD) and typically developing individuals were assessed on three neuropsychological tests of executive function (EF) and on scales of autism symptoms and co-occurring internalizing and externalizing symptoms at baseline (T1; N = 88, M_age = 11.8 years, 73% males), 2-year (T2; 99% retention, M_age = 13.9 years), and 10-year follow-ups (T3; 75% retention, M_age = 21.4 years). An EF composite score from T1 significantly predicted internalizing symptoms at T2 (β =.228) and internalizing and externalizing symptoms at T3 (β =.431 and.478, respectively), when controlling for age and autism symptoms. OThe findings suggest that EF difficulties are a long-term risk factor for more co-occurring symptoms.