The validity of attention deficit hyperactivity and hyperkinetic disorder symptom domains in nonclinical Dutch children.

Examined the validity of attention deficit hyperactivity disorder (ADHD) and hyperkinetic disorder (HKD) symptom domains in a sample of Dutch school children aged 10 to 14 years (N = 558). Confirmatory factor analysis indicated that symptoms of inattention, hyperactivity, and impulsivity were satisfactorily represented in various models. Psychopathological correlates of ADHD/HKD symptom domains were examined through their associations with the Child Behavior Checklist (CBCL) and the Youth Self-Report (YSR). As expected, all three symptom domains were strongly associated with externalizing problems. Furthermore, inattention and hyperactivity were more strongly related to CBCL/YSR attention problems, whereas impulsivity was more strongly associated with symptoms of aggression and delinquency.