Capturing decision confidence through response trajectories and willingness to gamble

Arkady Zgonnikov, Aisling Kenny, Denis O'Hora, KongFatt Wong-Lin

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Abstract

We aimed to investigate whether action dynamics could be employed as an objective measure of decision certainty and the relationship between certainty and confidence. Twenty-eight participants were required to view a random dot kinematogram display and report the dominant dot direction by moving the computer mouse. Directly following this, they were required to report the amount of points they were willing to bet that the answer they gave was the correct one. Coherence of the stimulus was experimentally manipulated and participants were required to complete 11 experimental blocks, each containing 48 trials of varying dot coherence. Mouse trajectory information was not predictive of post-decision certainty but was strongly related to decision accuracy. The findings were in line witha view of confidence as an evaluation of evidence which continues to accumulate after a decision.
Original languageEnglish
Title of host publicationUnknown Host Publication
PublisherUnknown Publisher
Number of pages4
Publication statusPublished - 23 Oct 2017
EventThe 33rd Annual Meeting of the International Society for Psychophysics - Fechner Day 2017 - Fukuoka, Japan
Duration: 23 Oct 2017 → …

Conference

ConferenceThe 33rd Annual Meeting of the International Society for Psychophysics - Fechner Day 2017
Period23/10/17 → …

Keywords

  • Perceptual decision making
  • mouse trajectory
  • gambling
  • decision confidence

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