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Individual differences in semantic switching flexibility: Effects of handedness

Published online by Cambridge University Press:  01 November 2009

VARALAKSHMI SONTAM ,
STEPHEN D. CHRISTMAN  and
JOHN D. JASPER
VARALAKSHMI SONTAM
Affiliation:
Department of Psychology, University of Toledo, Toledo, Ohio
STEPHEN D. CHRISTMAN*
Affiliation:
Department of Psychology, University of Toledo, Toledo, Ohio
JOHN D. JASPER
Affiliation:
Department of Psychology, University of Toledo, Toledo, Ohio
*
*Correspondence and reprint requests to: Stephen D. Christman, Department of Psychology, 2801 West Bancroft Ave., University of Toledo, Toledo, OH 43606-3390. E-mail: [email protected]
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Abstract

The semantic fluency task is a widely used assessment tool for evaluating memory-related cognitive deficits in neurological and neuropsychiatric disorders. The present study investigates individual differences in performance on this task in a normal population. The aim is to explore handedness differences in switching and clustering tendencies when performing this task. Consistent with our prediction, when asked to produce as many animal names as possible in 1 min, mixed handers demonstrated greater switching between different subcategories of animals than strong handers. These findings are interpreted in terms of the more diffuse spread of activation among conceptual representations in the right hemisphere, and greater access to right hemisphere processes in mixed handers. The findings have implications for the research communities using the semantic fluency task, irrespective of whether or not they are looking at handedness differences per se. (JINS, 2009, 15, 1023–1027.)

Keywords

Verbal fluencySwitchingClusteringHandednessIndividual differencesSemantic networks
Type
Brief Communications
Information
Journal of the International Neuropsychological Society , Volume 15 , Issue 6 , November 2009 , pp. 1023 - 1027
Copyright
Copyright © The International Neuropsychological Society 2009

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