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Differential effects of congenital left and right brain injury on intelligence
R Nass1, H deCoudres Peterson, D Koch
1Department of Neurology and Pediatrics, Cornell University Medical College, New York, NY 10021.
Brain and Cognition
|March 1, 1989
Abstract:
IQ performance was compared in 28 prepubertal children with unilateral left vs. right hemisphere preperinatal injury. Results indicated statistically superior FSIQ and VIQ in the left-lesioned group. Findings were interpreted as consistent with the hypothesis of a left-right maturational gradient, whereby early right hemisphere damage has a more severe effect on overall intellectual functioning than early left injury. Findings also lend support for a greater crowding effect, as seen in the sparing of verbal skills, after early left hemisphere injury.