“…Hyperactive children are impaired in sensorimotor (Werry, Minde, Guzman, Weiss, Dogan, & Hoy, 1972), timed sensorimotor (Stevens, Boydstun, Dykman, Peters, & Sinton, 1967;Stevens, Stover, & Backus, 1970;Roth, Gebelt, & Gebelt, 1983), and speeded motor tasks (Denckla & Rudel, 1978;Denckla, Rudel, Chapman, & Krieger, 1985;Carte, Nigg, & Hmshaw, 1996). Two pecuharities characterize the motor output of hyperactive children, poor temporal control and a relatively fast response style.…”