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An extensive form solution to the adverse selection problem in principal/multi-agent environments

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  • John Duggan

    ()
    (Department of Political Science and Department of Economics, University of Rochester, Rochester, NY 14627, USA)

Abstract

When agents have quasi-linear preferences, every incentive compatible social choice function can be implemented by a simple extensive form mechanism, even if agents are allowed to use mixed strategies. The second stage of the mechanism, which is used to elicit the agents' true preferences, is not reached in equilibrium; it gives agents strict dominant strategies, so equilibrium outcomes are not sensitive to agents' beliefs off the equilibrium path. This solves the multiple equilibrium problem of a principal facing several agents: the mechanism implements any solution to the principal's second best maximization problem. The specification of incentive compatibility constraints in the principal's problem presupposes a precise knowledge of the agents' beliefs. However, the above mechanism can be modified to implement the principal's second best (to within arbitrarily small perturbations of transfers), regardless of the agents' conditional beliefs.

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Bibliographic Info

Article provided by Springer in its journal Review of Economic Design.

Volume (Year): 3 (1998)
Issue (Month): 2 ()
Pages: 167-191

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Handle: RePEc:spr:reecde:v:3:y:1998:i:2:p:167-191

Note: Received: 30 April 1997 / Accepted: 16 September 1997
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Cited by:
  1. Jackson, Matthew O., 1999. "A Crash Course in Implementation Theory," Working Papers 1076, California Institute of Technology, Division of the Humanities and Social Sciences.
  2. John Duggan & Joanne Roberts, 2002. "Implementing the Efficient Allocation of Pollution," American Economic Review, American Economic Association, vol. 92(4), pages 1070-1078, September.
  3. Brusco, S., 1995. "Perfect Baysian Implementation in Economic Environments," UFAE and IAE Working Papers 322.95, Unitat de Fonaments de l'Anàlisi Econòmica (UAB) and Institut d'Anàlisi Econòmica (CSIC).

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