title: Late effects of unilateral brain lesions sustained before and after age one.
abstract: Forty-eight children with unilateral cerebral lesions, incurred before or after the first year of life, were given the Wechsler Intelligence Scale for Children, with an average delays of 4 and 8 1/2 yr for the late and early injuries, respectively. Thirty-one of their siblings were chosen as controls. Results are as follows: early and late right-hemisphere lesions significantly lower only Performance IQ. Early left lesions impair equally Verbal and Performance IQ, while late left-hemisphere lesions do not significantly affect Verbal or Performance IQ relative to controls.
mesh_terms: D000367:Age Factors; D001921:Brain / Q000473:pathology; D001927:Brain Diseases / Q000473:pathology / Q000523:psychology*; D002648:Child; D002675:Child, Preschool; D004292:Dominance, Cerebral; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D007360:Intelligence; D008297:Male; D011597:Psychomotor Performance; D014705:Verbal Behavior; D014888:Wechsler Scales