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Does decision confidence reflect effort?

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Summary
This summary is machine-generated.

Physical effort during decision-making did not impact decision accuracy or confidence. This study investigated how incidental physical exertion affects perceptual decision processes.

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Area of Science:

  • Cognitive Neuroscience
  • Decision Science
  • Human Motor Control

Background:

  • Goal-directed behavior involves transforming sensory input into decisions and actions.
  • While sensory accumulation in decision-making is well-studied, the influence of action parameters on decisions is less understood.
  • Emerging research suggests a reciprocal interaction between action and decision-making.

Purpose of the Study:

  • To investigate if physical effort during the decision deliberation period, rather than effort post-decision, influences perceptual decision-making.
  • To test the hypothesis that increased incidental physical effort decreases metacognitive accuracy without affecting decision accuracy.

Main Methods:

  • Participants performed a random-dot motion direction judgment task.
  • A robotic manipulandum applied opposing force, requiring participants to exert physical effort during evidence accumulation.
  • Effort investment was orthogonal to task success, serving as incidental exertion.

Main Results:

  • No evidence was found that incidental physical effort impacts the decision process.
  • Decision accuracy remained unaffected by the exerted physical effort.
  • Decision confidence was not influenced by the incidental effort during deliberation.

Conclusions:

  • Incidental physical effort during the deliberation phase of a perceptual decision does not appear to modulate decision accuracy or confidence.
  • Further research is needed to explore the complex interplay between action parameters and decision-making processes.