The concept of a non-extreme-outcome-additive capacity (neo-additive capacity ) is introduced. Neo-additive capacities model optimistic and pessimistic attitudes towards uncertainty as observed in many experimental studies. Moreover, neo-additive capacities can be applied easily in economic...

In their "Calculus of Consent" Buchanan and Tullock argued that self-interested agents choose social rules at the constitutional level with unanimity provided that these agents are sufficiently uncertain about their precise role at the post-constitutional level at which these rules will be...

In this paper, we study choice under uncertainty with belief functions on a set of outcomes as objects of choice. Belief functions describe what is objectively known about the probabilities of outcomes. We assume that decision makers have preferences over belief functions that reflect both their...