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Related Experiment Video

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Multi-tasking costs in triple-task performance despite dual-task preparation.

Maximilian Stefani1, Marian Sauter2, Wolfgang Mack3

  • 1Department of Human Sciences, Institute of Psychology, General Psychology, University of the Bundeswehr Munich, Werner-Heisenberg-Weg 39, 85577, Neubiberg, Germany. maximilian.stefani@unibw.de.

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Summary

Exploring multi-tasking, this study found that while preparation helps, triple-tasking costs persist. Individuals develop unique strategies for complex task coordination, challenging assumptions about practice eliminating multitasking costs.

Keywords:
Dual taskMultitaskingTask coordinationTrainingTriple task

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Area of Science:

  • Cognitive Psychology
  • Human Factors Engineering

Background:

  • Multi-tasking research traditionally focuses on dual-task scenarios.
  • Understanding the cognitive load and performance implications of transitioning to triple-tasking is crucial.

Purpose of the Study:

  • To investigate the effects of transitioning from dual-task to triple-task performance.
  • To compare triple-task performance between prepared and unprepared participant groups.
  • To examine the role of task coordination and strategy development in complex multi-tasking.

Main Methods:

  • Two groups (prepared and unprepared) performed single, dual, and triple tasks of varying complexity.
  • A preparation phase involved nine sessions, followed by an eight-session assessment phase.
  • Participant strategies and response times were analyzed across different task combinations.

Main Results:

  • An initial advantage for the prepared group diminished over time.
  • Both groups developed distinct processing strategies for triple tasks.
  • Task coordination significantly influenced response times as task sets expanded.
  • Multi-tasking costs persisted despite extensive preparation.

Conclusions:

  • Pre-training can facilitate skill transfer in multi-tasking, with task pair sets being key for coordination.
  • Extensive practice does not necessarily eliminate multi-tasking costs, challenging existing assumptions.
  • Cognitive models need refinement to account for complex triple-tasking behaviors and inter(sub)task coordination.