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Informational Intermediation and Competing Auctions

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Author Info

  • John Kennes

    (Department of Economics, University of Copenhagen)

  • Aaron Schiff

    (Department of Economics, University of Auckland)

Abstract

We examine the effects of provision of information about seller qualities by a third-party in a directed search model with heterogeneous sellers, asymmetric information, and where prices are determined ex post. The third party separates sellers into quality-differentiated groups and provides this information to some or all buyers. We show that this always raises total welfare, even if it causes the informed buyers not to trade with low quality sellers. However, buyers and some sellers may be made worse off in equilibrium. We also examine the provision of information by a profit maximizing monopoly, and show that it may have an incentive to overinvest in the creation of information relative to the social optimum.

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File URL: http://www.econ.ku.dk/english/research/publications/wp/2006/0602.pdf/
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Bibliographic Info

Paper provided by University of Copenhagen. Department of Economics in its series Discussion Papers with number 06-02.

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Length: 26 pages
Date of creation: Feb 2006
Date of revision:
Handle: RePEc:kud:kuiedp:0602

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