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Collective decisions with interdependent valuations

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    Abstract

    Many collective decision problems have the common feature that individuals' desired outcomes are correlated but not identical. This paper studies collective decisions with private information about these desired policies. Each agent holds private information which mainly concerns his own bliss point, but this private information also affects all other agents' bliss points. We concentrate on two specific mechanisms, the mean and the median mechanism. We establish existence of two symmetric Bayesian Nash equilibria of the corresponding game and compare the performance of the mechanisms for different degrees of interdependencies. Applications of our framework include the assignment of voting rights in the council of the European Central Bank, the design of decision processes in teams, firms, and international organizations.

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    File URL: http://www.vwl.uni-mannheim.de/gk/wp/gkwp-2001-02.pdf
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    Bibliographic Info

    Paper provided by Post Graduate Programme "Allocation on Financial Markets", University of Mannheim in its series GK working paper series with number 2001-02.

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    Length: 29 pages
    Date of creation: May 2001
    Date of revision: Sep 2001
    Handle: RePEc:xrs:gkwopa:2001-02

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    Keywords: collective decisions; asymmetric information; interdependent valuations;

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    1. Avinash Dixit & Henrik Jensen, 2000. "Equilibrium Contracts for the Central Bank of a Monetary Union," CESifo Working Paper Series 400, CESifo Group Munich.
    2. Fieseler, Karsten & Kittsteiner, Thomas & Moldovanu, Benny, 2003. "Partnerships, lemons, and efficient trade," Journal of Economic Theory, Elsevier, vol. 113(2), pages 223-234, December.
    3. Daniel Gros & Carsten Hefeker, 2002. "One Size Must Fit All: National Divergences in a Monetary Union," German Economic Review, Verein für Socialpolitik, vol. 3(3), pages 247-262, 08.
    4. d'Aspremont, Claude & Gerard-Varet, Louis-Andre, 1979. "Incentives and incomplete information," Journal of Public Economics, Elsevier, vol. 11(1), pages 25-45, February.
    5. von Hagen, Jurgen & Suppel, Ralph, 1994. "Central bank constitutions for federal monetary unions," European Economic Review, Elsevier, vol. 38(3-4), pages 774-782, April.
    6. Jehiel, Philippe & Moldovanu, Benny & Stacchetti, Ennio, 1996. "How (Not) to Sell Nuclear Weapons," American Economic Review, American Economic Association, vol. 86(4), pages 814-29, September.
    7. V. Crawford & J. Sobel, 2010. "Strategic Information Transmission," Levine's Working Paper Archive 544, David K. Levine.
    8. Süppel, Ralph & von Hagen, Jürgen, 1994. "Central Bank Constitutions for Monetary Unions," CEPR Discussion Papers 919, C.E.P.R. Discussion Papers.
    9. Piketty, Thomas, 1999. "The information-aggregation approach to political institutions," European Economic Review, Elsevier, vol. 43(4-6), pages 791-800, April.
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    Cited by:
    1. Christian Fahrholz & Philipp Mohl, 2004. "EMU-enlargement and the Reshaping of Decision-making within the ECB Governing Council: A Voting-Power Analysis," Eastward Enlargement of the Euro-zone Working Papers wp23, Free University Berlin, Jean Monnet Centre of Excellence, revised 01 Jun 2004.

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