. This holds under ambiguity, but not in a comparison treatment under risk. …Abstract Popular models for decision making under ambiguity assume that people use not one but multiple priors. This …

under uncertainty and imprecision risk. In the fifth part fuzzy probabilistic sets are applied for actuarial mathematics. …

replacement and a different color wins in each draw. The 50-50 risky urn turns out to have the highest risk conceivable among all … of SEU share the same predictions in our design, for any first-order risk attitude. Yet, we observe that substantial …

possible market capacities effectively occur with probability 1/2 but participants are only told that there is uncertainty …

Decisions of investing in sovereign assets involve both risk and ambiguity. Ambiguity arises from unknown elements … characterizing the value of a generic sovereign. In presence of ambiguity, ambiguity-averse investors are prone to pay for obtaining … summary information such as ratings which reduces ambiguity. Ambiguity-neutral and ambiguity-averse investors, then, make …

risk, subjects who score high on ambiguity tolerance explain some of the remainder of trusting behavior. …Despite intensive research there is no clear evidence for a link between lottery risk preferences and risk involved in … trusting others. We argue that this is partially due to a misalignment of the underlying sources of risk. Trusting is giving up …

We analyze ecosystem management under `unmeasurable' Knightian uncertainty or ambiguity which, given the uncertainties … characterizing ecosystems, might be a more appropriate framework relative to the classic risk case (measurable uncertainty). This …

discuss the claims of Andreoni and Sprenger (2012b) that "risk preferences are not time preferences" and assert that this may …

The principle of uncertain future: the probability of a future event contains an (hidden) uncertainty. The first … an uniform solution of the underweighting of high and the overweighting of low probabilities, of the Allais paradox, risk … preferences, of ambiguity aversion, of the Ellsberg paradox, etc. …