This paper illustrates on two examples the use of some multivariate statistical analysis methods for describing profiles of preferences. The first example is the Social Choise and Welfare council election of 1999 and the second is a school-case fictious one. The school case example shows how...

In this paper, we introduce the concept of a comparison function, which is a mapping g that assigns numbers to ordered pairs of alternatives (x,y) with the property that g(x,y)=- g(y,x). The paper discusses how some well-known choice correspondences on tournaments such as the uncovered set, the...

We develop a definition of equilibrium for agenda formation in general voting settings. The definition is independent of any protocol. We show that the set of equilibrium outcomes for any Pareto efficient voting rule is uniquely determined, and in fact coincides with that of the outcomes...