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Commitment and Conflict in Unanimity Bargaining

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  • Miettinen, Topi
  • Vanberg, Christoph

Abstract

We theoretically investigate how the application of unanimity rule can lead to inefficient delay in collective decision making. We do so in the context of a distributive multilateral bargaining model featuring strategic pre-commitment. Prior to each bargaining round, players can declare a minimum share that they must receive in return for their vote. Such declarations become binding with an exogenously given probability. We characterize the set of stationary subgame perfect equilibria under all q-majority rules. Our results suggest that unanimity rule is uniquely inefficient. All other rules, including all-but-one, are fully efficient.

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  • Miettinen, Topi & Vanberg, Christoph, 2024. "Commitment and Conflict in Unanimity Bargaining," Working Papers 0749, University of Heidelberg, Department of Economics.
    • Handle: RePEc:awi:wpaper:0749
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    1. Muthoo, Abhinay, 1996. "A Bargaining Model Based on the Commitment Tactic," Journal of Economic Theory, Elsevier, vol. 69(1), pages 134-152, April.
    2. Olivier Compte & Philippe Jehiel, 2002. "On the Role of Outside Options in Bargaining with Obstinate Parties," Econometrica, Econometric Society, vol. 70(4), pages 1477-1517, July.
    3. Muthoo,Abhinay, 1999. "Bargaining Theory with Applications," Cambridge Books, Cambridge University Press, number 9780521576475, September.
    4. Miller, Luis & Montero, Maria & Vanberg, Christoph, 2018. "Legislative bargaining with heterogeneous disagreement values: Theory and experiments," Games and Economic Behavior, Elsevier, vol. 107(C), pages 60-92.
    5. Merlo, Antonio & Wilson, Charles A, 1995. "A Stochastic Model of Sequential Bargaining with Complete Information," Econometrica, Econometric Society, vol. 63(2), pages 371-399, March.
    6. Timothy Feddersen & Wolfgang Pesendorfer, 1997. "Voting Behavior and Information Aggregation in Elections with Private Information," Econometrica, Econometric Society, vol. 65(5), pages 1029-1058, September.
    7. Jones, Stephen R. G., 1989. "Have your lawyer call my lawyer : Bilateral delegation in bargaining situations," Journal of Economic Behavior & Organization, Elsevier, vol. 11(2), pages 159-174, March.
    8. Ellingsen, Tore & Miettinen, Topi, 2014. "Tough negotiations: Bilateral bargaining with durable commitments," Games and Economic Behavior, Elsevier, vol. 87(C), pages 353-366.
    9. 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.
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    Cited by:

    1. Piazolo, David & Vanberg, Christoph, 2022. "Legislative bargaining with private information: A comparison of majority and unanimity rule," Working Papers 0708, University of Heidelberg, Department of Economics.

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    More about this item

    Keywords

    bargaining; commitment; conflict; delay; international negotiations; climate negotiations; legislative; multilateral; voting; majority; unanimity;
    All these keywords.

    JEL classification:

    • C78 - Mathematical and Quantitative Methods - - Game Theory and Bargaining Theory - - - Bargaining Theory; Matching Theory
    • D71 - Microeconomics - - Analysis of Collective Decision-Making - - - Social Choice; Clubs; Committees; Associations
    • D72 - Microeconomics - - Analysis of Collective Decision-Making - - - Political Processes: Rent-seeking, Lobbying, Elections, Legislatures, and Voting Behavior
    • F53 - International Economics - - International Relations, National Security, and International Political Economy - - - International Agreements and Observance; International Organizations

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