NF1 and attention deficit-hyperactivity disorder: Children with NS showed a weaker association between irritability and ADHD symptoms compared to TD children (p = .032, ηp2 = .03) and a stronger association between irritability and social skills impairments compared to both TD (p = .033, ηp2 = .03), and NF1 groups (p = .009, ηp2 = .06).