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Information Aggregation in Spatial Committee Games

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Author Info
Vincent Anesi () (University of Nottingham)
Abstract

This paper introduces information aggregation into the standard spatial committee game. We assume that committee members must agree on a decision rule to aggregate their private information on a policy-relevant state of the world. We derive sucient conditions for the ex ante incentive compatible core to be nonempty, and provide some characterization results for incentive compatible core decision rules, called "durable decision rules". In particular, core points of the underlying complete-information game are shown to be constant, durable decision rules of the game with incomplete information if they satisfy some robustness property. Moreover, we show that durable decision rules exist whenever information is Pareto-improving relative to the core of the underlying complete-information game, provided that voters' private signals are weakly informative.

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Paper provided by The Centre for Decision Research and Experimental Economics, School of Economics, University of Nottingham in its series Discussion Papers with number 2007-03.

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Date of creation: Aug 2007
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Handle: RePEc:cdx:dpaper:2007-03

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Related research
Keywords: Core existence Incentive compatibility Information aggregation Committee

Find related papers by JEL classification:
C71 - Mathematical and Quantitative Methods - - Game Theory and Bargaining Theory - - - Cooperative Games
D71 - Microeconomics - - Analysis of Collective Decision-Making - - - Social Choice; Clubs; Committees; Associations
D78 - Microeconomics - - Analysis of Collective Decision-Making - - - Positive Analysis of Policy-Making and Implementation
D82 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Asymmetric and Private Information

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References listed on IDEAS
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  1. Forges, Francoise & Minelli, Enrico & Vohra, Rajiv, 2002. "Incentives and the core of an exchange economy: a survey," Journal of Mathematical Economics, Elsevier, vol. 38(1-2), pages 1-41, September. [Downloadable!] (restricted)
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  2. Schofield, Norman., . "Classification Theorem for Smooth Social Choice," Working Papers 514, California Institute of Technology, Division of the Humanities and Social Sciences. [Downloadable!]
  3. Bahceci, Serkan, 2003. "The incentive compatible coarse core when information is almost complete," Journal of Mathematical Economics, Elsevier, vol. 39(1-2), pages 127-134, February. [Downloadable!] (restricted)
  4. Kerstin Gerling & Hans Peter Grüner & Alexandra Kiel & Elisabeth Schulte, 2003. "Information acquisition and decision making in committees: A survey," Working Paper Series 256, European Central Bank. [Downloadable!]
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  5. Beth Allen, 2003. "Incentives in market games with asymmetric information: the core," Economic Theory, Springer, vol. 21(2), pages 527-544, 03. [Downloadable!] (restricted)
  6. Matthews, Steven A., . "Pairwise Symmetry Conditions for Voting Equilibria," Working Papers 209, California Institute of Technology, Division of the Humanities and Social Sciences. [Downloadable!]
  7. Jeffrey S. Banks & John Duggan & Michel LeBreton, . "Bounds for Mixed Strategy Equilibria and the Spatial Model of Elections," Wallis Working Papers WP14, University of Rochester - Wallis Institute of Political Economy. [Downloadable!]
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  8. Rubinstein, Ariel, 1979. "A Note about the "Nowhere Denseness" of Societies Having an Equilibrium under Majority Rule," Econometrica, Econometric Society, vol. 47(2), pages 511-14, March. [Downloadable!] (restricted)
  9. Bhaskar, V. & van Damme, Eric, 2002. "Moral Hazard and Private Monitoring," Journal of Economic Theory, Elsevier, vol. 102(1), pages 16-39, January. [Downloadable!] (restricted)
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  10. Holmstrom, Bengt & Myerson, Roger B, 1983. "Efficient and Durable Decision Rules with Incomplete Information," Econometrica, Econometric Society, vol. 51(6), pages 1799-819, November. [Downloadable!] (restricted)
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  11. McKelvey, Richard D & Schofield, Norman, 1987. "Generalized Symmetry Conditions at a Core Point," Econometrica, Econometric Society, vol. 55(4), pages 923-33, July. [Downloadable!] (restricted)
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  12. McKelvey, Richard D, 1979. "General Conditions for Global Intransitivities in Formal Voting Models," Econometrica, Econometric Society, vol. 47(5), pages 1085-1112, September. [Downloadable!] (restricted)
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