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Title

The contribution of aging to the understanding of the dimensionality of executive functions
Authors
Delaloye, Christophe
Moy, Guenael
Baudois, Sandra
De Bilbao, F.
Dubois Remund, C.
Hofer, F.
Ragno Paquier, C.
Weber, Kerstin Maud
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Published in Archives of Gerontology and Geriatrics. 2009, vol. 49, no. 1, p. e51-59
Abstract It has been reported in the literature that executive functions may be fractioned into updating, shifting, and inhibition. The present study aimed to explore whether these executive sub-components can be identified in a more age-heterogeneous sample and see if they are prone to an age-related decline. We tested the performances of 81 individuals aged from 18 to 88 years old in each executive sub-component, working memory, fluid intelligence and processing speed. Correlation analysis revealed only a slight positive relationship between the two updating measures. A linear decrement with age was observed only for two complex executive tests. Tasks indexing working memory, processing speed and fluid intelligence showed a stronger linear decline with age than executive tasks. In conclusion, our results did not replicate the executive structure known from the literature, and revealed that decrement in executive function is not an unavoidable concomitant of aging but rather concerns specific executive tasks.
Keywords Adolescent — Adult — Aged — Aged, 80 and over — Aging/*physiology — Cognition Disorders/*diagnosis/epidemiology — Female — Humans — Male — Middle Aged — Neuropsychological Tests — Young Adult
Identifiers
PMID: 18977543
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Structures
Faculté de médecine / Section de médecine clinique / Département de psychiatrie
Research group Groupe Giannakopoulos Panteleimon (psychiatrie générale) (201)
Citation
(ISO format) 		DELALOYE, Christophe et al. The contribution of aging to the understanding of the dimensionality of executive functions. In: Archives of Gerontology and Geriatrics, 2009, vol. 49, n° 1, p. e51-59. https://archive-ouverte.unige.ch/unige:19767

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Deposited on : 2012-04-23

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