Leippold, Markus; Trojani, Fabio; Vanini, Paolo - Institut für Schweizerisches Bankwesen <Zürich> - 2006
We propose a new continuous time framework to study asset prices under learning and ambiguity aversion. In a partial information Lucas economy with time additive power utility, a discount for ambiguity arises if and only if the elasticity of intertemporal substitution (EIS) is above one. Then,...