they know more about, even when their beliefs are held constant. (They are averse to "ambiguity", or uncertainty about … probability.) We review evidence, recent theoretical explanations, and applications of research on ambiguity and SEU. …

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 …