We study the design of mechanisms satisfying a novel desideratum: privacy. This requires the mechanism not reveal "much" about any agent's type to other agents. We propose the notion of joint differential privacy: a variant of differential privacy used in the privacy literature. We show by...

I propose a new solution concept—behavioral equilibrium—to study environments with players who are naive, in the sense that they fail to account for the informational content of other players' actions. I apply the framework to certain adverse selection settings and show that, contrary to the...