Individually Rational, Balanced-Budget Bayesian Mechanisms and the
AbstractWe investigate the issue of implementation via individually rational ex-post budget-balanced Bayesian mechanisms. We demonstrate that all social choice rules that generate a nonnegative ex-ante surplus, including ex-post efficient ones, can generically be implemented via such mechanisms for any profile of the utility functions. The aggregate expected surplus in these mechanisms can be distributed in an arbitrary way. Also generically, any ex-post efficient social choice rule can be implemented in an informed principal framework, i.e. when the mechanism is offered by one of the informed parties. Only ex-post efficient social choice rules that allocate all surplus to the party designing the mechanism are both sequential equilibrium outcomes and neutral optima, i.e. outcomes that can never be blocked. This result implies that even an informed principal can extract all surplus from players in a Bayesian mechanism
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Bibliographic InfoPaper provided by Society for Economic Dynamics in its series 2004 Meeting Papers with number 633.
Date of creation: 2004
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Postal: Society for Economic Dynamics Christian Zimmermann Economic Research Federal Reserve Bank of St. Louis PO Box 442 St. Louis MO 63166-0442 USA
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mechanism design; individual rationality; ex-post budget balancing; surplus allocation; informed principal.;
Find related papers by JEL classification:
- C72 - Mathematical and Quantitative Methods - - Game Theory and Bargaining Theory - - - Noncooperative Games
- D82 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Asymmetric and Private Information; Mechanism Design
This paper has been announced in the following NEP Reports:
- NEP-ALL-2004-08-02 (All new papers)
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