ambiguity averse relation. First, we define two notions of more ambiguous with respect to such a class. A more ambiguous (I) act … makes an ambiguity averse decision maker (DM) worse off but does not affect the welfare of an ambiguity neutral DM. A more … ambiguous (II) act adversely affects a more ambiguity averse DM more, as measured by the compensation they require to switch …

of ambiguity, there exists an equilibrium with inertia where agents also insure fully against Knightian uncertainty. When … the level of ambiguity exceeds a critical threshold, full insurance no longer prevails and there exist equilibria with …

of ambiguity, there exists an equilibrium with inertia where agents also insure fully against Knightian uncertainty. When … the level of ambiguity exceeds a critical threshold, full insurance no longer prevails and there exist equilibria with …

of ambiguity, there exists an equilibrium with inertia where agents also insure fully against Knightian uncertainty. When … the level of ambiguity exceeds a critical threshold, full insurance no longer prevails and there exist equilibria with …

We examine a variety of preference-based definitions of ambiguous events in the context of the smooth ambiguity model … ambiguity model, we show that Ghirardato and Marinacci (2002) would identify the same set of ambiguous and unambiguous events as … more interesting source is that these two definitions can confound non-constant ambiguity attitude and the ambiguity of an …

only possible if all discounted net trades of the equilibrium allocation are mean ambiguity-free. …

-Debreu equilibria only if the values of net trades are ambiguity-free in the mean. Without aggregate uncertainty, inefficiencies arise …