Loss of confidence is interpreted as an increase in the ambiguity experienced by investors who maximize Choquet Expected Utility. Currency crises are modelled to resemble bankruns. Using countries having fragile financial systems, a model of twin crises is obtained. An exogenous interim loss of...

In referring to the ‘animal spirits’ of investors, Keynes had already pointed to a basic distinction between ‘calculable’ and ‘non-calculable’ risk or ‘ambiguity’. The purpose of this paper is to discuss the effects of ambiguity on the public’s expectations about inflation and...

We study the impact of ambiguity on financial intermediation in an economy where agents have random liquidity needs. The ambiguity the agents face is modeled by the degree of confidence in their additive beliefs. We compare an optimal liquidity allocation with the allocation achieved by trade in...