Children with attention-deficit hyperactivity disorder (ADHD) are reported to have more difficulties with self-regulation and emotional regulation. Current ADHD models suggest a primary deficit in behavioral inhibition causes secondary deficits in executive functions, impacting on emotional regulation. This study examined the relationship of regulation and emotionality on behavior problems in children with ADHD and the relationship between ADHD symptoms and emotional regulation and emotionality. Mothers of 32 male children between the ages of 6 and 11 diagnosed as ADHD combined type or predominantly hyperactive-impulsive type completed questionnaires assessing self-control and emotionality. Results indicated that ADHD boys who showed greater emotionality in terms of anger/frustration and less self-control and inhibition were rated as having more behavioral difficulties. Children with symptoms of hyperactivity and impulsivity were rated as lower in self-control and inhibition and higher in emotionality. Results of the study are discussed with respect to current theoretical models of ADHD. (Contains 1 table)