This paper considers a decision-making process under ambiguity in which the decision-maker is supposed to split outcomes between familiar and unfamiliar ones. She is assumed to behave differently with respect to unfamiliar gains, unfamiliar losses and customary (familiar) outcomes. In...

This paper shows that ambiguity – as opposed to risk – may lead to sticky prices even with fully rational agents. Attitude towards ambiguity is assumed, as supported by theoretical literature and experimental evidence, to be asymmetric in the form of ambiguity aversion towards uncertain...

Shortage of stockpiled antiviral drugs and insufficient production capacity of vaccines make the possible avian flu pandemic a global disaster. Catastrophic consequences in social and economic losses loom over the near future of humans but they derive from a wrong business model based on private...

The Precautionary Principle has been proposed as the proper behaviour to adopt in the face of the new catastrophic risks that have made their appearance in the last decades. We advance a workable definition of the Precautionary Principle and apply it to the possible outbreak among humans of the...

It is suggested that individual behavior under ambiguity, or knightian uncertainty, may represent an alternative explanation for contractual incompleteness with respect to the traditional approach in terms of transactions costs. This paper aims at showing that the introduction of ambiguity in...