The concept of Ambiguity designates those situations where the information available to the decision maker is …-expected utility models hanging on a shaky ground. In particular, it leaves unanswered basic questions such as: (1) Does Ambiguity … Utility (SEU) in the presence of Ambiguity?, and (4) If so, what kind of behavior should emerge in the presence of Ambiguity …

probabilities on the new states. The agents in the economy are classified with respect to their attitude towards this Ambiguity: the … financiers are (locally) Ambiguity-seeking while the consumers are Ambiguity-averse. An entrepreneur and a financier come … contracting problem does not fall within the standard theory due to the presence of Ambiguity (on the financier’s side) and to the …