Cognitive abilities of persons with right hemispheric language representation. It is well known that language functions are mostly mediated by the left cerebral hemisphere. Approximately 4% of the population (mostly left-handed people), however, have right hemispheric language representation. Theories which predict the outcome of right hemispheric language representation on cognitive abilities are contradictory and divergent. Some researchers postulate differences in cognitive abilities between persons with right hemispheric and left hemispheric language representation, whereas other researchers postulate similar cognitive abilities for the two groups. The present study indicates that there are no differences in cognitive ability between normal persons with right and with left hemispheric language representation. In the light of this finding it is postulated that people with right hemispheric language representation possibly have a crossed cerebral organization which does not lead to any cognitive deficit or advantage.
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