We characterize preferences over acts that can be represented by a utility function and a multiple-prior, such that an act f is preferred to act g if there is a prior under which the expected utility induced by f is higher than that induced by g. These preferences are referred to as justifiable...

Quite often, decision makers face choices that involve new aspects and alternatives never considered before. Scenarios of this sort may arise, for instance, as a result of technological progress or from individual circumstances such as growing awareness. In such situations, simple inference...

Justifiability is a name for a variety of well-documented behavioral phenomena that violate rational choices. For instance, preferences and choices frequently depend on payoff-irrelevant factors, and not only on the collection of alternatives. Motivated by these findings we present a generalized...