Information Revelation and Efficiency in Auctions
We study the impact of information revelation on effciency in auctions. In a constrained-efficient mechanism, i.e. a mechanism that is efficient subject to the incentivecompatibility constraint, any additional information available to bidders increases the expected efficiency of the mechanism. This result cannot be extended to a more general setup: in a second-price sealed bid auction, revelation of information might lead to efficiency losses.
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