This note compares public and private information certification in a simple class of communication games with one sender and two receivers. It also emphasizes the role of belief consistency conditions in a perfect Bayesian equilibrium of such games.

We survey the main results on strategic information transmission, which is often referred to as ``persuasion" when types are verifiable and as ``cheap talk" when they are not. In the simplest ``cheap talk'' model, an informed player sends a single message to a receiver who makes a decision. The...

This paper characterizes geometrically the set of all Nash equilibrium payoffs achievable with unmediated communication in persuasion games, i.e., games with an informed expert and an uninformed decisionmaker in which the expert's information is certifiable. The first equilibrium...

This paper studies the set of equilibria that can be achieved by adding general communication systems to Bayesian games in which some information can be certified or, equivalently, in which players' types are partially verifiable. Certifiability of information is formalized by a set of available...

Nous présentons une synthèse des principaux modèles de transmission stratégique de l'information. Dans une première partie, nous étudions les jeux dits de "cheap-talk", c'est-à-dire les jeux de communication directe dans lesquels les messages sont gratuits et non vérifiables. Nous...

This paper examines finite parimutuel betting games with asymmetric information, with particular attention to differences between sequential and simultaneous settings, and betweenfully rational and myopic ("price taking") behavior. In the simultaneous parimutuel market,all (symmetric and...

This paper examines ¯nite parimutuel betting games with asymmetric information, with par-ticular attention to di®erences between sequential and simultaneous settings, and betweenfully rational and myopic (\price taking") behavior. In the simultaneous parimutuel market,all (symmetric and...

How should a seller optimally sell his good to a buyer whose willingness to pay depends on his privately-known taste and on product characteristics privately known by the seller? The optimum is characterized by a mediated selling protocol and is sometimes implementable by bilateral face-to-face...