Risk a basic parameter of portfolio selection and its modelling involves some difficulties. Thus, more and more researchers try to find a solution to this problem proposing other measures than the classic ones used in portfolio selection. On the other hand, Multicriteria Decision Aid has known a...

We study a decision-maker who follows the Savage axioms. We show that if s(he) is able to take unobservable actions which influence the probabilities of outcomes then it can appear to an outsider as if his/her subjective probabilities are non-additive. Implications for multi-period decisions are...

We study the case of a competitive firm exposed to both input and output price risk. In an expected utility framework, we elicit the separation theorem, and show the positive impact of derivatives markets on the optimal output. We also show that in the case of several inputs, the risk-averse...

We provide a survey of the literature on ranking sets of objects. The interpretations of those set ranking include those employed in the theory of choice under complete uncertianty, rankings of opportunity sets, set rankings that appear in matching theory, and the structure of assemly proferences.

Kimball [1990] developps a theory of prudence isomorphic to Pratt [1964] and Arrow [1965] theory of risk aversion. Nevertheless, if the Arrow-Pratt risk aversion index determines behavior in risk, it is not always the case for prudence. Moreover, concept of prudence and precautionary behavior...

This paper provides a characterization of the consequences of the assumption that a decision maker with a given utility function is Choquet rational: She maximizes expected utility, but possibly with respect to non-additive beliefs, so that her preferences are represented by Choquet expected...

Firms regularly introduce new, non-patentable products and innovations. When the possibility of a new product or an innovation arises to a potential seller, the seller faces a risk in successfully creating and producing a new product that consumers value above its costs. This framework enables a...

Standard decision theoretic models take as given that agents have perfect self-awareness; they have complete knowledge of thier own abilities. In the first part of the paper we combine philosophical and empirical arguments to attack the perfect awareness assumption. In the second part we ask...

This paper deals with the question of whether the euro area Phillips curve is nonlinear. There has recently been a great deal of discussion and studies concerning the same question in the US context. The data set includes most of the euro area countries, namely Austria, Germany, Finland, France,...