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Consistency and Communication in Committees

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  • Deimen, Inga
  • Ketelaar, Felix
  • Le Quement, Mark T.

Abstract

This paper analyzes truthtelling incentives in pre-vote communication in heterogeneous committees. We generalize the classical Condorcet jury model by introducing a new informational structure that captures consistency of information. In contrast to the impossibility result shown by Coughlan (2000) for the classical model, full pooling of information followed by sincere voting is an equilibrium outcome of our model for a large set of parameter values implying the possibility of ex post conflict between committee members. Furthermore, abandonning the assumption of sincere voting, we characterize necessary and sufficient conditions for the implementability of the first best decision rule via truthful equilibria.

Suggested Citation

  • Deimen, Inga & Ketelaar, Felix & Le Quement, Mark T., 2013. "Consistency and Communication in Committees," Bonn Econ Discussion Papers 02/2013, University of Bonn, Bonn Graduate School of Economics (BGSE).
    • Handle: RePEc:zbw:bonedp:022013
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    References listed on IDEAS

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    1. Feddersen, Timothy & Pesendorfer, Wolfgang, 1998. "Convicting the Innocent: The Inferiority of Unanimous Jury Verdicts under Strategic Voting," American Political Science Review, Cambridge University Press, vol. 92(1), pages 23-35, March.
    2. Patrick Hummel, 2012. "Deliberation in large juries with diverse preferences," Public Choice, Springer, vol. 150(3), pages 595-608, March.
    3. Austen-Smith, David & Feddersen, Timothy J., 2006. "Deliberation, Preference Uncertainty, and Voting Rules," American Political Science Review, Cambridge University Press, vol. 100(2), pages 209-217, May.
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    5. Coughlan, Peter J., 2000. "In Defense of Unanimous Jury Verdicts: Mistrials, Communication, and Strategic Voting," American Political Science Review, Cambridge University Press, vol. 94(2), pages 375-393, June.
    6. Gerardi, Dino & McLean, Richard & Postlewaite, Andrew, 2009. "Aggregation of expert opinions," Games and Economic Behavior, Elsevier, vol. 65(2), pages 339-371, March.
    7. Mark Quement & Venuga Yokeeswaran, 2015. "Subgroup deliberation and voting," Social Choice and Welfare, Springer;The Society for Social Choice and Welfare, vol. 45(1), pages 155-186, June.
    8. Austen-Smith, David & Banks, Jeffrey S., 1996. "Information Aggregation, Rationality, and the Condorcet Jury Theorem," American Political Science Review, Cambridge University Press, vol. 90(1), pages 34-45, March.
    9. Mark Thordal-Le Quement, 2013. "Communication compatible voting rules," Theory and Decision, Springer, vol. 74(4), pages 479-507, April.
    10. Van Weelden, Richard, 2008. "Deliberation Rules and Voting," Quarterly Journal of Political Science, now publishers, vol. 3(1), pages 83-88, January.
    11. Sourav Bhattacharya, 2013. "Preference Monotonicity and Information Aggregation in Elections," Econometrica, Econometric Society, vol. 81(3), pages 1229-1247, May.
    12. Jacob K. Goeree & Leeat Yariv, 2011. "An Experimental Study of Collective Deliberation," Econometrica, Econometric Society, vol. 79(3), pages 893-921, May.
    13. Crawford, Vincent P & Sobel, Joel, 1982. "Strategic Information Transmission," Econometrica, Econometric Society, vol. 50(6), pages 1431-1451, November.
    14. Gerardi, Dino & Yariv, Leeat, 2007. "Deliberative voting," Journal of Economic Theory, Elsevier, vol. 134(1), pages 317-338, May.
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    Cited by:

    1. Quement, Mark T. Le & Marcin, Isabel, 2020. "Communication and voting in heterogeneous committees: An experimental study," Journal of Economic Behavior & Organization, Elsevier, vol. 174(C), pages 449-468.
    2. Jérôme Mathis & Marcello Puca & Simone M. Sepe, 2021. "Deliberative Institutions and Optimality," CSEF Working Papers 614, Centre for Studies in Economics and Finance (CSEF), University of Naples, Italy, revised 09 Jun 2021.
    3. Mark T. Le Quement & Isabel Marcin, 2016. "Communication and voting in heterogeneous committees: An experimental study," Discussion Paper Series of the Max Planck Institute for Research on Collective Goods 2016_05, Max Planck Institute for Research on Collective Goods, revised Oct 2016.
    4. Ding, Huihui & Pivato, Marcus, 2021. "Deliberation and epistemic democracy," Journal of Economic Behavior & Organization, Elsevier, vol. 185(C), pages 138-167.
    5. Frommeyer, Tim, 2015. "On Two-Period Committee Voting: Why Straw Polls Should Have Consequences," VfS Annual Conference 2015 (Muenster): Economic Development - Theory and Policy 112806, Verein für Socialpolitik / German Economic Association.

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    More about this item

    Keywords

    Communication; Committees; Voting;
    All these keywords.

    JEL classification:

    • D72 - Microeconomics - - Analysis of Collective Decision-Making - - - Political Processes: Rent-seeking, Lobbying, Elections, Legislatures, and Voting Behavior
    • D82 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Asymmetric and Private Information; Mechanism Design
    • D83 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Search; Learning; Information and Knowledge; Communication; Belief; Unawareness

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