Optimal use of correlated information in mechanism design when full surplus extraction may be impossible
AbstractWe study the mechanism design problem when the principal can condition the agent's transfers on the realization of ex post signals that are correlated with the agents' types. Cremer and McLean (Econometrica, 53(1985) 345-361; 56(1988) 1247-1258), McAfee and Reny (Econometrica, 6(1992) 395-421), Riordan and Sappington (JET, 45(1988) 189-199) studied situations where either the signals are rich enough, or the conditional signal distributions and agents' payoffs are such that a mechanism can be designed to fully extract the surplus from every agent. In this paper, we study the optimal utilization of the signals when full surplus extraction may not be possible. We assume that the cardinality of the signal space is smaller than that of the type space and the Riordan and Sappington conditions do not always hold. We study the optimal ways to utilize the signals. For some tractable special cases, we investigate the optimal mechanism and the level of surplus that can be extracted, and identify the agent types who obtain rent.
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Bibliographic InfoArticle provided by Elsevier in its journal Journal of Economic Theory.
Volume (Year): 135 (2007)
Issue (Month): 1 (July)
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Web page: http://www.elsevier.com/locate/inca/622869
Other versions of this item:
- Bose, Subir & Zhao, Jinhua, 2003. "Optimal Use of Correlated Information in Mechanism Design When Full Surplus Extraction May Be Impossible," Staff General Research Papers 10579, Iowa State University, Department of Economics.
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