Smooth Ambiguity Aversion in the Small and in the Large

In this paper I use the smooth ambiguity model developed by Klibanoff, Marinacci, and Mukerji (2005) to define the concepts of ambiguity and uncertainty premia in a way analogous to what Pratt (1964) did in the risk theory literature. I show that those concepts may be useful to quantify the effect ambiguity has on the welfare of economic agents. I also provide local approximations of these premia and show the link that exists between them when comparing different degrees of ambiguity aversion not only in the small, but also in the large.