Title

A multifaceted investigation of the link between mental fatigue and task disengagement

Document Type

Journal article

Source Publication

Psychophysiology

Publication Date

3-1-2015

Volume

52

Issue

3

First Page

305

Last Page

315

Publisher

Blackwell Publishing Inc.

Keywords

Fatigue, Motivation, P3, Pupil diameter, Task engagement

Abstract

Mental fatigue is often characterized by reduced motivation for effortful activity and impaired task performance. We used subjective, behavioral (performance), and psychophysiological (P3, pupil diameter) measures during an n-back task to investigate the link between mental fatigue and task disengagement. After 2h, we manipulated the rewards to examine a possible reengagement effect. Analyses showed that, with increasing fatigue and time-on-task, performance, P3 amplitude, and pupil diameter decreased. After increasing the rewards, all measures reverted to higher levels. Multilevel analysis revealed positive correlations between the used measures with time-on-task. We interpret these results as support for a strong link between task disengagement and mental fatigue.

DOI

10.1111/psyp.12339

Language

English

Print ISSN

00485772

E-ISSN

14698986

Publisher Statement

Copyright © 2014 Society for Psychophysiological Research. Access to external full text or publisher's version may require subscription.

Full-text Version

Publisher’s Version

Recommended Citation

Hopstaken, J. F., Van Der Linden, D., Bakker, A. B., & Kompier, M. A. J. (2015). A multifaceted investigation of the link between mental fatigue and task disengagement. Psychophysiology, 52(3), 305-315. doi: 10.1111/psyp.12339

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