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Modeling distracted performance

Hawkins, GE, Mittner, M, Forstmann, BU and Heathcote, A ORCID: 0000-0003-4324-5537 2019 , 'Modeling distracted performance' , Cognitive Psychology, vol. 112 , pp. 48-80 , doi: 10.1016/j.cogpsych.2019.05.002.

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The sustained attention to response task (SART) has been the primary method of studying the phenomenon of mind wandering. We develop and experimentally test the first integrated cognitive process model that quantitatively explains all stationary features of behavioral performance in the SART. The model assumes that performance is generated by a competitive race between a stimulus-related decision process and a stimulus-unrelated rhythmic response process. We propose that the stimulus-unrelated process entrains to timing regularities in the task environment, and is unconditionally triggered as a habit or ‘insurance policy’ to protect against the deleterious effects of mind wandering on ongoing task performance. For two SART experiments the model provided a quantitatively precise account of a range of previously reported trends in choice, response time and self-reported mind wandering data. It also accounted for three previously unidentified features of response time distributions that place critical constraints on cognitive models of performance in situations when people might engage in task-unrelated thoughts. Furthermore, the parameters of the rhythmic race model were meaningfully associated with participants’ self-reported distraction, even though the model was never informed by these data. In a validation test, we disrupted the latent rhythmic component with a manipulation of inter-trial-interval variability, and showed that the architecture of the model provided insight into its counter-intuitive effect. We conclude that performance in the presence of mind wandering can be conceived as a competitive latent decision vs. rhythmic response process. We discuss how the rhythmic race model is not restricted to the study of distraction or mind wandering; it is applicable to any domain requiring repetitive responding where evidence accumulation is assumed to be an underlying principle of behavior.

Item Type: Article
Authors/Creators:Hawkins, GE and Mittner, M and Forstmann, BU and Heathcote, A
Keywords: mind wandering, task-unrelated thought, sustained attention, decision making, evidence accumulation, cognitive model
Journal or Publication Title: Cognitive Psychology
Publisher: Academic Press
ISSN: 0010-0285
DOI / ID Number: 10.1016/j.cogpsych.2019.05.002
Copyright Information:

Copyright 2019 Elsevier Inc.

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