Is cognitive switching performance on the D-KEFS Color Word Interference Test predicted by frontal lobe volume?
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1
University of Bergen, Department of Biological and Medical Psychology, Norway
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2
University of Bergen, Department of Biomedicine, Neuroinformatics and Image Analysis Laboratory, Norway
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3
Haraldsplass Deaconess Hospital, Kavlis Dementia Research Centre, Norway
Cognitive switching is a central component of executive function and has been related to the frontal lobes, but the association is still not settled. Different neuropsychological tests have been used to measure switching, but few take into account basic component skills. Color Word Interference Test (CWIT) from the Delis-Kaplan Executive Function System (D-KEFS) claims to give measures of both basic skills (reading words and colors) and the more cognitive demanding processes of inhibition and switching. The aim of the present study was to investigate relationships between volumetric measures of brain lobes and a “pure” switching measure from the CWIT in 112 healthy older individuals, aged 49-80 years. We used a novel technique of conditional inference trees. When including age, gender, normalized gray matter volume of the left/right frontal, temporal, parietal and occipital lobes as explanatory variables and standard residuals for switching as a response variable, the analysis revealed that the grey matter volume of the left temporal lobe predicted outcome on the switching condition without any other variable adding to the predictive value. The result showed that the complex relationships between brain measures should be taken into account when predicting performance on behavioral measures of cognitive switching.
Conference:
The 20th Annual Rotman Research Institute Conference, The frontal lobes, Toronto, Canada, 22 Mar - 26 Mar, 2010.
Presentation Type:
Poster Presentation
Topic:
Aging
Citation:
Adolfsdottir
S,
Haasz
J,
Lundervold
A,
Lundervold
AJ,
Wehling
E and
Ystad
MA
(2010). Is cognitive switching performance on the D-KEFS Color Word Interference Test predicted by frontal lobe volume?.
Conference Abstract:
The 20th Annual Rotman Research Institute Conference, The frontal lobes.
doi: 10.3389/conf.fnins.2010.14.00089
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Received:
29 Jun 2010;
Published Online:
29 Jun 2010.
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Correspondence:
S. Adolfsdottir, University of Bergen, Department of Biological and Medical Psychology, Bergen, Norway, Steinunn.adolfsdottir@psych.uib.no