Sex differences in functional cerebral asymmetries in a repeated measures design

Author(s): Gunturkun, O.

Journal/Book: Brain Cognition. 1999; 41: 525 B St, Ste 1900, San Diego, CA 92101-4495, USA. Academic Press Inc. 263-275.

Abstract: The aim of the present study was to analyze whether task repetitions which art: an inevitable part of repeated measures designs might induce performance alterations specific for gender and hemisphere. Male and female subjects conducted twice a lexical decision, a polygon recognition, and a face discrimination task as a visual half field paradigm with the two experimental sessions repeated by 2 weeks. The results show that only in female subjects can a session effect for the lexical decision and the polygon recognition task be demonstrated which is hemisphere specific. Thus, repeated measures designs seem to have a gender- and hemisphere-specific effects of their own which could confound with other variables under study.

Note: Article Hausmann M, Ruhr Univ Bochum, Fak Psychol, AE Biopsychol, D-44780 Bochum, GERMANY

Keyword(s): gender; lateralization; lexical decision; figural comparison; face discrimination; hemispheric asymmetries; visual half field; UNILATERAL BRAIN-DAMAGE; MENSTRUAL-CYCLE; PERCEPTUAL ASYMMETRY; GENDER DIFFERENCES; SPATIAL ABILITIES; VERBAL FUNCTIONS; LATERALITY; HANDEDNESS; ORGANIZATION; RELIABILITY

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