Journal article

Perceptual decision confidence is sensitive to forgone physical effort expenditure

William Turner, Raina Angdias, Daniel Feuerriegel, Trevor T-J Chong, Robert Hester, Stefan Bode

COGNITION | ELSEVIER | Published : 2021


Contemporary theoretical accounts of metacognition propose that action-related information is used in the computation of perceptual decision confidence. We investigated whether the amount of expended physical effort, or the 'motoric sunk cost' of a decision, influences perceptual decision confidence judgements in humans. In particular, we examined whether people feel more confident in decisions which required more effort to report. Forty-two participants performed a luminance discrimination task that involved identifying which of two flickering grayscale squares was brightest. Participants reported their choice by squeezing hand-held dynamometers. Across trials, the effort required to report..

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Awarded by Australian Research Council (ARC)

Funding Acknowledgements

This work was supported by an Australian Research Council (ARC) Discovery Project Grant [DP160103353] to SB and RH and an Australian Government Research Training Program (RTP) Scholarship to WT.