title: IQ decline following early unilateral brain injury: a longitudinal study.
abstract: We examine whether children with early unilateral brain injury show an IQ decline over the course of development. Fifteen brain injured children were administered an IQ test once before age 7 and again several years later. Post-7 IQ scores were significantly lower than pre-7 IQ scores. In addition, pre-7 IQ scores were lower for children with larger lesions, but children with smaller lesions and higher pre-7 IQ scores showed a greater IQ decline over time. These findings suggest that the cognitive outcomes of children with early lesions, particularly those with relatively small lesions, change over the course of development.
authors.affiliation: Department of Psychology, University of Chicago, Chicago, IL 60637, USA. s-levine@uchicago.edu
authors.forename: Susan C
authors.initials: SC
authors.lastname: Levine
authors.forename: Ruth
authors.initials: R
authors.lastname: Kraus
authors.forename: Erin
authors.initials: E
authors.lastname: Alexander
authors.forename: Linda Whealton
authors.initials: LW
authors.lastname: Suriyakham
authors.forename: Peter R
authors.initials: PR
authors.lastname: Huttenlocher
mesh_terms: D000293:Adolescent; D000328:Adult; D001930:Brain Injuries / Q000150:complications* / Q000503:physiopathology*; D002648:Child; D002675:Child, Preschool; D003072:Cognition Disorders / Q000175:diagnosis* / Q000209:etiology*; D005260:Female; D007839:Functional Laterality / Q000502:physiology; D006801:Humans; D007360:Intelligence; D008297:Male; D009483:Neuropsychological Tests; D012720:Severity of Illness Index