Title

Rationalizable Implementation

Document Type

Discussion Paper

Publication Date

5-1-2009

CFDP Number

1697

CFDP Pages

21

Abstract

This note studies (full) implementation of social choice functions under complete information in (correlated) rationalizable strategies. The monotonicity condition shown by Maskin (1999) to be necessary for Nash implementation is also necessary under the more stringent solution concept. We show that it is also sufficient under a mild “no worst alternative” condition. In particular, no economic condition is required.

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