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The wisdom of partisan crowds.

Joshua Becker1,2,3, Ethan Porter4, Damon Centola5,6

  • 1Annenberg School for Communication, University of Pennsylvania, Philadelphia, PA 19104; joshua.aaron.becker@gmail.com.

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|May 16, 2019
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Summary

Social information exchange in politically homogeneous groups surprisingly improved accuracy and reduced polarization, challenging theories of partisan bias. This finding extends collective intelligence research to political contexts.

Keywords:
collective intelligencedeliberative democracynetworkspolarizationthe wisdom of crowds

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Area of Science:

  • Social Psychology
  • Political Science
  • Collective Intelligence

Background:

  • Deliberative democracy theories suggest social information processing enhances group beliefs.
  • Wisdom of crowds research shows information exchange boosts accuracy on factual matters.
  • Political polarization theories posit that partisan bias leads to extreme and inaccurate beliefs, diminishing responsiveness to social information.

Purpose of the Study:

  • To investigate if the wisdom of crowds effect is resilient to partisan bias.
  • To test whether social information exchange in politically homogeneous networks impacts belief accuracy and polarization.

Main Methods:

  • Conducted two web-based experiments.
  • Participants answered factual questions prone to partisan bias.
  • Observed peer estimates within politically homogeneous social networks before and after information exchange.

Main Results:

  • Contrary to polarization theories, social information exchange in homogeneous networks increased belief accuracy.
  • Homogeneous networks also demonstrated a reduction in polarization.
  • The wisdom of crowds effect was found to be robust to partisan bias.

Conclusions:

  • Social information exchange can improve collective accuracy and reduce polarization, even within politically homogeneous groups.
  • Findings challenge existing theories on political polarization and social information processing.
  • Extends the generalizability of collective intelligence research into political domains.