We argue that the use of rational expectations in monopolistic markets, as typically done, is overly restrictive because the rationale of this approach is not met in those markets. In a model that encompasses a general equilibrium framework, we consider a monopolist (a producer) with subjective...

This paper extends the convergence result in Kalai and Lehrer (1993a, 1993b) to a class of games where players have a payoff function continuous for the product topology. Provided that 1) every player maximizes her expected payoff against her own beliefs, 2) every player updates her beliefs in a...

Abstract We argue that reluctance to invest in drug treatments to fight the AIDS epidemics in developing countries is largely motivated by severe losses occurring from the future albeit uncertain appearance of a curative vaccine. We design a set of securities generating full insurance coverage...

We argue that an increase in investments in R&D for innovative treatments to eradicate neglected diseases in developing countries leads to a rational decrease in investments in available treatment technologies. In a formal model where the government of a developing country seeks to optimally...

We analyze how a benevolent, privately informed government agency would optimally release information about the economy׳s growth rate when the agents hold heterogeneous beliefs. We model two types of agent: “conforming” and “dissenting.” The former has a prior that is identical to that...