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A strict ex-post incentive compatible mechanism for interdependent valuations

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  • Nath, Swaprava
  • Zoeter, Onno

Abstract

The impossibility result by Jehiel and Moldovanu says that in a setting with interdependent valuations, any efficient and ex-post incentive compatible mechanism must be a constant mechanism. Mezzetti circumvents this problem by designing a two stage mechanism where the decision of allocation and payment are split over the two stages. This mechanism is elegant, however it has a major weakness. In the second stage, agents are weakly indifferent about reporting their valuations truthfully: an agent’s payment is independent of her reported valuation and truth-telling for this stage is by assumption. We propose a modified mechanism which makes truthful reporting in the second stage a strict equilibrium.

Suggested Citation

  • Nath, Swaprava & Zoeter, Onno, 2013. "A strict ex-post incentive compatible mechanism for interdependent valuations," Economics Letters, Elsevier, vol. 121(2), pages 321-325.
    • Handle: RePEc:eee:ecolet:v:121:y:2013:i:2:p:321-325
    DOI: 10.1016/j.econlet.2013.08.033
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    References listed on IDEAS

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    1. Jehiel, Philippe & Moldovanu, Benny, 2001. "Efficient Design with Interdependent Valuations," Econometrica, Econometric Society, vol. 69(5), pages 1237-1259, September.
    2. Philippe Jehiel & Moritz Meyer-ter-Vehn & Benny Moldovanu & William R. Zame, 2006. "The Limits of ex post Implementation," Econometrica, Econometric Society, vol. 74(3), pages 585-610, May.
    3. Krishna, Vijay, 2009. "Auction Theory," Elsevier Monographs, Elsevier, edition 2, number 9780123745071.
    4. Mas-Colell, Andreu & Whinston, Michael D. & Green, Jerry R., 1995. "Microeconomic Theory," OUP Catalogue, Oxford University Press, number 9780195102680.
    5. Claudio Mezzetti, 2004. "Mechanism Design with Interdependent Valuations: Efficiency," Econometrica, Econometric Society, vol. 72(5), pages 1617-1626, September.
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    Cited by:

    1. Swaprava Nath & Onno Zoeter & Y. Narahari & Christopher Dance, 2015. "Dynamic mechanism design with interdependent valuations," Review of Economic Design, Springer;Society for Economic Design, vol. 19(3), pages 211-228, September.

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    More about this item

    Keywords

    Interdependent value; Ex-post incentive compatibility; Efficient mechanisms; Ex-post individual rationality;
    All these keywords.

    JEL classification:

    • D51 - Microeconomics - - General Equilibrium and Disequilibrium - - - Exchange and Production Economies
    • D82 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Asymmetric and Private Information; Mechanism Design

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