Title

Efficient Auctions and Interdependent Types

Document Type

Discussion Paper

Publication Date

1-1-2012

CFDP Number

1846

CFDP Pages

14

Abstract

We consider the efficient allocation of a single good with interdependent values in a quasi-linear environment. We present an approach to modelling interdependent preferences distinguishing between “payoff types” and “belief types” and report a characterization of when the efficient allocation can be partially Bayesian implemented on a finite type space. The characterization can be used to unify a number of sufficient conditions for efficient partial implementation in this classical auction setting. We report how a canonical language for discussing interdependent types — developed in a more general setting by Bergemann, Morris and Takahashi (2011) — applies in this setting and note by example that this canonical language will not allow us to distinguish some types in the payoff type — belief type language.

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