This paper extends Savage's subjective approach to probability and utility from decision problems under exogenous uncertainty to choice in strategic environments. Interactive uncertainty is modeled both explicitly, using hierarchies of preference relations, the analogue of beliefs hierarchies,...

A Nash equilibrium can also be seen as a Cournot-Nash equilibrium, though this is debated because Cournot provided a specific application, not a general formulation. In my view, another of Nash's fundamental contributions stands out when contrasting him to Cournot. Cournot treated economic...

We conduct an experiment in which we elicit subjects’ beliefs over opponents’ behavior multiple times for a given game without feedback. We find that the large majority of individual subjects have stochastic belief reports, which we argue cannot be explained by learning or measurement error....