Abstract
Previous studies of sex differences in the effects of unilateral lesions were critically reviewed. New data were included in a review of 28 samples of patients with unilateral right or left cerebral lesions. The results reveal that the relationship of sex to the magnitude of Verbal vs. Performance IQ discrepancy is equal for both right and left lesion samples, and accounts for approximately 15 per cent of the variability among samples. The data are discussed in regard to potential clinical utility of a patientʼs sex in the interpretation of IQ score discrepancies.