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Econometrica Vol. 82 No. 3 2014

Certifiable Pre-Play Communication: Full Disclosure

Jeanne Hagenbach1; Frédéric Koessler2,3; Eduardo Perez-Richet1

1 École Polytechnique · 2 Paris Jourdan Sciences Economiques · 3 Paris School of Economics

open access

Abstract

This article asks when communication with certifiable information leads to complete information revelation. We consider Bayesian games augmented by a pre-play communication phase in which announcements are made publicly. We first characterize the augmented games in which there exists a fully revealing sequential equilibrium with extremal beliefs (i.e., any deviation is attributed to a single type of the deviator). Next, we define a class of games for which existence of a fully revealing equilibrium is equivalent to a richness property of the evidence structure. This characterization enables us to provide different sets of sufficient conditions for full information disclosure that encompass and extend all known results in the literature, and are easily applicable. We use these conditions to obtain new insights in games with strategic complementarities, voting with deliberation, and persuasion games with multidimensional types.

DOI
10.3982/ecta11070
Volume
82
Issue
3
Pages
1093-1131
Language
en
Sources
bibtex:phds-export.bib openalex crossref

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