Authors: Paul, Robert¹; Gunstad, John²; Cooper, Nicholas³; Williams, Leanne⁴; Clark, C. Richard⁵; Cohen, Ronald⁶; Lawrence, Jeffrey⁷; Gordon, Evian⁸

Source: International Journal of Neuroscience, Volume 117, Number 4, April 2007 , pp. 549-568(20)

Publisher: Informa Healthcare

Abstract:

Previous studies haverevealed significant differences in performance on nonlanguage dependent cognitive tests across international settings among younger individuals, with less pronounced differences evident among older individuals (>54 years of age). The present study examined a broad range of cognitive performance as well as electrophysiological indices of brain function in a multisite and international context. A total of 200 individuals in the United States, 233 individuals in Europe, and 829 individuals in Australia were administered a standardized computerized neuropsychological battery, and complementary electroencephalogram (EEG) recordings were completed. Results revealed no significant differences in cognitive function or electrophysiology across the three continents. Similarly, although there was a main effect for age, the interaction between age and continent was not significant in any of the omnibus analyses. These findings indicate a high degree of similarity in neurocognitive and electrophysiological function among individuals residing in developed Western cultures, consistent with a traitlike status and the high heritability of the EEG.

Keywords: cognition; cross-cultural assessment; EEG; multicultural; neuropsychology

Document Type: Research article

DOI: http://dx.doi.org/10.1080/00207450600773665

Affiliations: 1: Department of Psychology Behavioral Neuroscience, University of Missouri, St. Louis, Missouri, USA 2: Department of Psychology, Kent State University, Kent, Ohio, USA 3: The Brain Resource International Database, Brain Resource Company, Ultimo, NSW, Australia 4: Department of Psychological Medicine, University of Sydney, Australia,The Brain Dynamics Centre Western Clinical School, Westmead Millennium Institute Hospital University of Sydney, Sydney, Australia 5: School of Psychology, Flinders University, Adelaide, Australia 6: Department of Psychiatry Centers for Behavioral Medicine Brown Medical School, Providence, Rhode Island, USA 7: Department of Psychiatry Transdisciplinary Research Group, Brown Medical School, Providence, Rhode Island, USA 8: Department of Psychological Medicine, University of Sydney, Australia,The Brain Resource International Database and Brain Resource Company The Brain Dynamics Centre Western Clinical School Westmead Hospital, University of Sydney Sydney, Australia

Publication date: 2007-04-01

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