Working memory decline in normal aging: Memory load and representational demands affect performance

Détails

ID Serval
serval:BIB_E4F54D1FD6AB
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
Working memory decline in normal aging: Memory load and representational demands affect performance
Périodique
Learning and Motivation
Auteur(s)
Klencklen Giuliana, Banta Lavenex Pamela, Brandner Catherine, Lavenex Pierre
ISSN
0023-9690
Statut éditorial
Publié
Date de publication
11/2017
Peer-reviewed
Oui
Volume
60
Pages
10-22
Langue
anglais
Résumé
Normal aging is associated with numerous changes in cognitive capacities, including an overall decline in working memory performance. Nevertheless, whereas some neuropsychological evaluations have suggested that visuo-spatial working memory may exhibit a greater age-related decline than verbal working memory, other assessments made in real-world tasks, or in tasks with higher memory loads, have suggested that age-related declines in working memory performance may be similar for spatial, visual and verbal information. Here, we tested young (20–30 years) and older (64–73 years) healthy adults in real-world laboratory memory tasks designed to assess the impact of memory load (one, two or three items to remember) on age-related changes in working memory performance for color and allocentric spatial information. We used several measures to characterize working memory performance: the total number of choices to find the goal(s), a measure of overall task performance; the number of correct choices before erring, an estimate of memory capacity; and the number of errorless trials, a measure of perfect memory. All measures revealed: (1) an overall decline of working memory performance with age; (2) a greater age-related decline of working memory performance with higher memory loads, regardless of the type of information; (3) no evidence that spatial working memory was more affected by age than color working memory. We discuss how age-related declines in working memory performance may be most influenced by memory load, the representational demands of the task and its dependence on hippocampal function, and not by the type of information to be remembered.
Mots-clé
Experimental and Cognitive Psychology, Education, Developmental and Educational Psychology, Health(social science), Neuropsychology and Physiological Psychology
Web of science
Création de la notice
30/01/2018 12:00
Dernière modification de la notice
20/08/2019 16:08
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