We depart from Savage's (1954) common state space assumption and introduce a model that allows for a subjective understanding of uncertainty. Within the revealed preference paradigm, we uniquely identify the agent's subjective state space via her preferences conditional on incoming information....

We offer a model that combines and generalizes case-based decision theory and expected utility maximization. It is based on the premise that an agent looks ahead and assesses possible future scenarios, but may not know how to evaluate their likelihood and may not be sure that the set of...

We discuss the notion of a state of the world in axiomatic decision theory, and argue that it should be viewed as an "eventuality" that is implicitly assumed to be independent of the process by which prefer- ences are observed. The distinction between states, which are assumed to resolve all...