Sixty-four severely handicapped hyperactive children, most of whom had associated handicaps of the minimal brain dysfunction syndrome, were restudied behaviorally, scholastically, and neurologically five years later at adolescence. While the hyperactivity had diminished, other handicaps, notably social and intrapsychic difficulties, attentional, and learning disorders, persisted.
Weiss G, Minde K, Werry JS, Douglas V, Nemeth E. Studies on the Hyperactive ChildVIII. Five-Year Follow-up. Arch Gen Psychiatry. 1971;24(5):409-414. doi:10.1001/archpsyc.1971.01750110021004