Hyperactivity and the attention deficit disorders: expanding frontiers.

This article explores some of the pivotal research in the understanding and treatment of hyperactivity, overviewing the research milestones as well as the vexing questions that remain. Focus is placed upon the social worlds of hyperactive children and upon the overlap between hyperactive and aggressive behavior patterns. This is followed by an extensive look at the effects of stimulants upon these children and the needs for (and promise of) nonpharmacologic treatment strategies as adjuncts or alternatives to medication.