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Related Experiment Video

Updated: Aug 25, 2025

A Cognitive Paradigm to Investigate Interference in Working Memory by Distractions and Interruptions

A Cognitive Paradigm to Investigate Interference in Working Memory by Distractions and Interruptions

Published on: July 16, 2015

Modality-specific effects of mental fatigue in multitasking.

Marie Mueckstein¹, Stephan Heinzel², Urs Granacher³

¹International Psychoanalytic University, Berlin, Germany; Universität Potsdam, Germany.

Acta Psychologica

|October 15, 2022

Summary

Mental fatigue did not increase dual-task costs as expected. Instead, practice effects were observed, with modality incompatible tasks requiring higher control demands than compatible ones.

Keywords:

Crosstalk Dual task Executive control Modality compatibility Practice

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Last Updated: Aug 25, 2025

A Cognitive Paradigm to Investigate Interference in Working Memory by Distractions and Interruptions

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Published on: July 16, 2015

A Rat Model of Central Fatigue Using a Modified Multiple Platform Method

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Published on: August 14, 2018

Collecting Sleep, Circadian, Fatigue, and Performance Data in Complex Operational Environments

Collecting Sleep, Circadian, Fatigue, and Performance Data in Complex Operational Environments

Published on: August 8, 2019

Area of Science:

Cognitive Psychology
Human Factors
Neuroscience

Background:

Dual-task costs differ between modality compatible and incompatible stimulus-response mappings.
Mechanisms behind these differences, especially under fatigue, are not fully understood.

Purpose of the Study:

Investigate if additional control mechanisms are engaged during simultaneous processing of modality incompatible mappings.
Examine the impact of mental fatigue on dual-task costs for compatible and incompatible mappings.

Main Methods:

Online pre-post design with 45 young adults (19-30 years).
Three groups: modality compatible fatigue, modality incompatible fatigue, and passive control.
90-minute intervention with dual-tasking, followed by pre/post behavioral and subjective assessments.

Main Results:

A practice effect, not fatigue, improved dual-task performance across all groups.
Modality incompatible intervention group selectively improved incompatible mapping performance without transfer.
Compatible intervention group showed moderate improvement in both mappings, but reported increased subjective fatigue and reduced motivation.

Conclusions:

Prolonged modality incompatible dual-task performance involves high control demands, distinct from compatible tasks.
Interplay of training and fatigue effects suggests task-specific control mechanisms.
Mental fatigue induction did not yield expected increases in dual-task costs, highlighting practice effects.