
There is substantial comorbidity with oppositional defiant disorder (ODD) and conduct disorder (CD) in children with attention-deficit/hyperactivity disorder (ADHD). It is important to determine the effect of comorbid ODD and CD on the clinical course in youth with ADHD. Biederman and associates1 recently published clinical findings from a 10-year prospective, longitudinal study of boys with ADHD, following them into early adulthood.







