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What failure in collective decision-making tells us about metacognition collective failure and metacognition

Research output: Contribution to book/anthology/report/proceedingBook chapterCommunication

  • Dan Bang, University of Oxford, Calleva Research Centre for Evolution and Human Sciences
  • ,
  • Ali Mahmoodi, University of Tehran, Institute for Research for Fundamental Sciences
  • ,
  • Karsten Olsen
  • Andreas Roepstorff
  • Geraint Rees, UCL Institute of Cognitive Neuroscience, University College London
  • ,
  • Chris Frith
  • Bahador Bahrami, UCL Institute of Cognitive Neuroscience, University College London

Condorcet [2] proposed that a majority vote drawn from individual, independent and fallible (but not totally uninformed) opinions provides near-perfect accuracy if the number of voters is adequately large. Research in social psychology has since then repeatedly demonstrated that collectives can and do fail more often than expected by Condorcet. Since human collective decisions often follow from exchange of opinions, these failures provide an exquisite opportunity to understand human communication of metacognitive confidence. This question can be addressed by recasting collective decision-making as an information integration problem similar to multisensory (cross-modal) perception. Previous research in systems neuroscience shows that one brain can integrate information from multiple senses nearly optimally. Inverting the question, we ask: under what conditions can two brains integrate information about one sensory modality optimally? We review recent work that has taken this approach and report discoveries about the quantitative limits of collective perceptual decision-making, and the role of the mode of communication and feedback in collective decision-making. We propose that shared metacognitive confidence conveys the strength of an individual's opinion and its reliability inseparably. We further suggest that a functional role of shared metacognition is to provide substitute signals in situations where outcome is necessary for learning but unavailable or impossible to establish.

Original languageEnglish
Title of host publicationThe Cognitive Neuroscience of Metacognition
EditorsStephen M. Fleming, Christopher D. Frith
Number of pages33
PublisherSpringer Verlag, Berlin, Heidelberg
Publication year1 Dec 2014
ISBN (print)3642451896, 9783642451898
ISBN (Electronic)9783642451904
Publication statusPublished - 1 Dec 2014

Bibliographical note

Publisher Copyright:
© 2014 Springer-Verlag Berlin Heidelberg. All rights reserved.

    Research areas

  • Collective decision-making, Communication, Confidence, Cooperative behaviour, Feedback, Metacognition, Signal detection

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