The Choquet expected utility model deals with nonadditive probabilities (or capacities). Their dependence on the information the decision-maker has about the possibility of the events is taken into account. Two kinds of information are examined: interval information (for instance, the percentage...

The dual notion of Pareto-efficiency (i.e., individual utilities cannot be reached with fewer resources than those of the allocation under consideration) is used in order to define the resources-core. A measure of social loss with respect to the core is then introduced, more or less as already...

The paper analyzes strategic behavior in a two-stage environmental choice problem under different information scenarios. Given uncertainty about environmental cost and irreversibility of development, "learning without destroying" emerges from strategic competition when information is endogenous...

We apply an alternating proposals protocol with a confirmation stage as a way of solving a Prisoner’s Dilemma game. We interpret players’ proposals and (no) confirmation of outcomes of the game as a tacit communication device. The protocol leads to unprecedented high levels of cooperation in...