The dramatic increase in the incidence of hyperkinesis witnessed in recent years constitutes a growing concern for the children so classified. Some relevant issues are discussed in terms of (a) diagnostic practices, (b) treatment practices, and (c) changing views about the nature of the disorder itself. Rather than focusing on the child as a source of the problem (as has typically been the case), future research and practices need to demonstrate a broad-based perspective on the adjustment problems of these children that examines "situational" determinants and institutional policies.