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Guy E Hawkins1, Matthias Mittner2, Birte U Forstmann3

  • 1School of Psychology, University of Newcastle, Australia.

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|May 27, 2019
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Summary
This summary is machine-generated.

We developed a cognitive model explaining how mind wandering affects performance on tasks like the Sustained Attention to Response Task (SART). Our model shows task performance results from a competition between stimulus-related decisions and stimulus-unrelated rhythmic responses.

Keywords:
Cognitive modelDecision makingEvidence accumulationMind wanderingSustained attentionTask-unrelated thought

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Area of Science:

  • Cognitive Psychology
  • Computational Neuroscience

Background:

  • The Sustained Attention to Response Task (SART) is a key tool for studying mind wandering.
  • Existing models struggle to fully explain behavioral performance patterns during mind wandering.

Purpose of the Study:

  • To develop and validate the first integrated cognitive process model that quantitatively explains behavioral performance in the SART.
  • To provide a mechanistic account for how mind wandering influences sustained attention and task performance.

Main Methods:

  • Development of a novel cognitive process model based on a competitive race between stimulus-related decision and stimulus-unrelated rhythmic response processes.
  • Experimental testing of the model using two SART experiments, analyzing choice, response time, and self-reported mind wandering data.
  • Validation through disruption of the rhythmic component and analysis of its effects on performance.

Main Results:

  • The model precisely accounted for previously reported trends in SART performance and self-reported mind wandering.
  • The model explained three previously unidentified features of response time distributions, constraining cognitive models of task-unrelated thought.
  • Model parameters correlated with self-reported distraction, and validation tests supported the model's architecture.

Conclusions:

  • Mind wandering's impact on performance can be understood as a competition between latent decision and rhythmic response processes.
  • The developed 'rhythmic race model' offers a framework applicable beyond mind wandering to repetitive tasks involving evidence accumulation.