Inattention, impulsivity, and hyperactivity from preschool to school age: performance of hard-to-manage boys on laboratory measures.
Boys identified as hard-to-manage at age 4 and age-matched controls were assessed on laboratory measures of inattention, impulsivity, and hyperactivity at ages 4, 6, and 9. Hard-to-manage boys still exhibited some behavioral difficulties at age 9, but were not more inattentive or impulsive than controls. Boys with Attention Deficit Disorder (ADD) at age 9 showed performance deficits in each symptom-related domain relative to problem boys without ADD and controls. However, hard-to-manage problem boys with and without ADD did not differ on most earlier measures of inattention, impulsivity, and hyperactivity, suggesting that symptoms specific to ADD emerged more clearly between ages 6 and 9.
University of Pittsburgh, PA 15260, USA.
S E
SE
Marakovitz
S B
SB
Campbell
D001289:Attention Deficit Disorder with Hyperactivity / Q000175:diagnosis* / Q000523:psychology; D002648:Child; D002675:Child, Preschool; D005500:Follow-Up Studies; D006801:Humans; D007175:Impulsive Behavior / Q000523:psychology*; D007360:Intelligence; D007361:Intelligence Tests; D008297:Male; D011581:Psychological Tests