Journal
PHYSIOLOGY & BEHAVIOR
Volume 92, Issue 1-2, Pages 105-109Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.physbeh.2007.05.035
Keywords
cognition; sex differences; lateralization; handedness; memory; testosterone
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Women typically outperform men on episodic memory and verbal fluency tasks, whereas men tend to excel on visuospatial tasks. As the vast majority of individuals are right-handed (RE), sex differences in the cognitive literature reflect laterality-specific patterns for RE individuals. We examined the magnitude of cognitive sex differences as a function of hand dominance in samples of RE and non-RE individuals. Results showed the expected sex differences in the RE group, whereas these differences were unreliable in the non-RH group. These results are discussed in terms of earlier findings of a more bilateral representation of language functions in non-RH men, possibly affecting their visuospatial performance negatively and their verbal performance positively, thereby reducing cognitive sex differences. (C) 2007 Elsevier Inc. All rights reserved.
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