To analyze strategic interactions arising in the cyber-security context, we develop a new reputation game model in which an attacker can pretend to be a normal user and a defender may have to announce attack detection at a certain point of time without knowing whether he has been attacked. We...

This paper studies the optimal design of a liability-sharing arrangement as an infinitely repeated game. We construct a noncooperative model with two agents: one active and one passive. The active agent can take a costly and unobservable action to reduce the incidence of crisis, but a crisis is...

We study the dominant separating equilibrium that maximizes the sender's payoff in quadratic signaling games. We relax the common and restrictive belief monotonicity assumption. We introduce a game characteristic called discriminant and show that there exists a linear incentive compatible...

We consider the design of a repeated contest in the presence of a potentially biased judge. Beliefs about the judge’s bias may discourage contestants from exerting effort. In a repeated contest, the identity of a previous winner influences these beliefs. The contest designer is able to commit...

We study a hierarchical Bayesian persuasion game with a sender, a receiver, and several potential intermediaries, generalizing the framework of Kamenica and Gentzkow (2011). The sender must be persuasive through a hierarchy of intermediaries to reach the final receiver, whose action affects all...

We study learning by privately informed forward-looking agents in a simple repeated-action setting of social learning. Under a symmetric signal structure, forward-looking agents behave myopically for any degrees of patience. Myopic equilibrium is unique in the class of symmetric threshold...

The article shows how Jean-Francois Mertens contributed to the development of game theory and microeconomics as we know them today. Along with about 80 articles, Mertens's topics go from the formulation of Bayesian decision making in games with incomplete information to the foundations of cost...

Markets differ in the availability of past trading records of their participants. In a repeated sale model with adverse selection, we study the impact of the availability of such records on trading outcomes. We consider regimes varying with respect to the length of the available records. We...

We consider repeated trading by sellers with persistent private information in dynamic lemons markets. We compare the outcomes of a transparent market where past trading prices are public to those of an opaque market, where they are private. We characterize the upper bound of trading surplus in...

This paper examines the welfare effects of informational intermediation. A (shortlived) seller sets the price of a product that is sold through a (long-lived) informational intermediary. The intermediary can disclose information about the product to consumers, earns a fixed percentage of the...