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Neuropsychologia. 2005;43(6):953-6.

Lateralised processing of positive facial emotion: sex differences in strength of hemispheric dominance.

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1
Department of Mental Health, Clinical Research Centre, University of Aberdeen, Scotland AB25 2ZH, UK. v.bourne@abdn.ac.uk

Abstract

Sex differences in lateralisation have been examined frequently, but have found varying and contradictory results. The experiment presented in this paper examines the lateralisation of processing positive facial emotion in 276 right handed undergraduates (138 males, 138 females). All participants completed two behavioural tests of lateralisation: a handedness preference questionnaire and a chimeric faces emotion judgement task, which measured strength of lateralisation for the perception of positive facial emotion. A highly significant difference was found for the chimeric faces task only: males were more strongly lateralised than females, although both males and females tended to be right hemisphere dominant. The results suggest that females are more bilaterally distributed and hence have greater access to mechanisms located in each hemisphere.

[Indexed for MEDLINE]

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