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The HoneyComb Paradigm for Research on Collective Human Behavior
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Does discussion make crowds any wiser?

H Mercier1, N Claidière2

  • 1Institut Jean Nicod, Département d'études cognitives, ENS, EHESS, PSL University, CNRS, Paris, France.

Cognition
|October 8, 2021
PubMed
Summary

Large group discussions can enhance the wisdom of crowds for problems with correct answers. This research found that group dialogue often improves collective accuracy, contrary to initial concerns about reduced diversity.

Keywords:
AggregationGroup decision makingMajority ruleSocial learningWisdom of crowds

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Area of Science:

  • Social Psychology
  • Collective Intelligence
  • Decision Sciences

Background:

  • The wisdom of crowds effect relies on opinion diversity and voter independence.
  • Group discussion typically reduces diversity and independence, potentially hindering collective accuracy.
  • Prior research indicates small group discussions can improve individual answer accuracy.

Purpose of the Study:

  • To investigate the impact of large group discussions on the wisdom of crowds.
  • To determine if discussion in large groups aids or impedes collective problem-solving accuracy.
  • To analyze these effects across demonstrative, factual, and ethical problem types.

Main Methods:

  • 1958 participants were organized into large groups (22-212 individuals).
  • Participants solved demonstrative, factual, and ethical problems individually, then via group discussion.
  • Individual and aggregated group answers were compared before and after discussion.

Main Results:

  • For demonstrative problems, discussion improved both individual and aggregated answers.
  • For factual problems, discussion enhanced individual answers and either improved or had no effect on aggregated answers.
  • Discussion in large groups did not detract from, and often improved, the wisdom of crowds effect for problems with correct answers.

Conclusions:

  • Large group discussions can positively influence the wisdom of crowds for problems with objective solutions.
  • The findings suggest that structured discussion can amplify collective intelligence rather than diminish it.
  • Implications for collective decision-making and problem-solving in large groups are highlighted.