Aggressive, prosocial, and nonsocial behavior in hyperactive boys: dose effects of methylphenidate in naturalistic settings.

Given the importance of interpersonal interactions for hyperactive children, we evaluated the impact of methylphenidate on specific categories of social behavior in 25 boys, aged 6-12, with attention deficit-hyperactivity disorder (ADHD). These children participated in a 3-week, double-blind, crossover trial with placebo and low (0.3 mg/kg) and moderate (0.