Volume 71, Issue 4 p. 1565-1597
REVIEW

Cognitive fatigue in young, middle-aged, and older: Breaks as a way to recover

Jessica Gilsoul

Jessica Gilsoul

GIGA-CRC in Vivo Imaging, University of Liège, Liège, Belgium

Psychology and Neuroscience of Cognition Research Unit (PsyNCog), University of Liège, Liège, Belgium

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Vincent Libertiaux

Vincent Libertiaux

FARAH, University of Liège, Liège, Belgium

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Fabienne Collette

Corresponding Author

Fabienne Collette

GIGA-CRC in Vivo Imaging, University of Liège, Liège, Belgium

Psychology and Neuroscience of Cognition Research Unit (PsyNCog), University of Liège, Liège, Belgium

Correspondence

Fabienne Collette, GIGA-CRC in Vivo Imaging, University of Liège, Allée du Six Août, 8, Allée du Cyclotron, B30, Quartier Agora, 4000 Sart-Tilman, Liège, Belgium.

Email: [email protected]

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First published: 01 November 2021
Citations: 2

Funding information: Belgian National Fund for Scientific Research (F.R.S.-FNRS)

Abstract

Maintaining productivity is of primary importance in organizational settings. Nowadays, the pressure for work efficacy is required until advanced age given the increased longevity in western societies. Worryingly, performing a work for a long-lasting duration may induce cognitive fatigue, which can alter job performance or cause work accidents. Regarding laboratory studies, cognitive fatigue, as induced in Time-on-Task designs, has been shown to increase reaction times (RTs). According to the Effort-Recovery Model (ERM), work breaks are able to relieve cognitive fatigue and to maintain performance. However, few studies have investigated age-related effects in such a context. In this study, young, middle-aged, and older people performed a 160-min Stroop task in a “NoBreak” or a “Breaks” condition. To assess changes in RTs with Time-on-Task, the task duration was divided into four 40-min blocks in which the ex-Gaussian τ parameter (i.e., an index of longer RTs) was extracted from individual RT data. Our main results showed that young and middle-aged people increased their τ with Time-on-Task while older people did not. Importantly, participants in the NoBreak condition increased their τ with Time-on-Task while those in the Breaks condition kept this parameter constant, suggesting a beneficial effect of breaks independently of age.

CONFLICT OF INTEREST

None.

DATA AVAILABILITY STATEMENT

The data that support the findings of this study are available from the corresponding author upon reasonable request.