Danan, Eric; Gajdos, Thibault; Tallon, Jean-Marc - Centre d'Économie de la Sorbonne, Université Paris 1 … - 2010
We analyze the aggregation problem without the assumption that individuals and society have fully determined and observable preferences. More precisely, we endow individuals ans society with sets of possible von Neumann-Morgenstern utility functions over lotteries. We generalize the classical...