Abstract:Much of the literature on mechanism design and implementation uses the revelation principle to restrict attention to direct mechanisms. This is without loss of generality in a well de…ned sense. It is, however, restrictive if one is concerned with the set of equilibria, if one is concerned about the size of messages that will be sent, or if one is concerned about privacy. We showed in McLean and Postlewaite (2014) that when agents are informationally small, there exist small modi…cations to VCG mechanisms in i… Show more
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