aDivision of the Humanities and Social Sciences, Mail Code 228-77, California Institute of Technology, Pasadena, CA 91125, USA;bDepartment of Economics, University of Texas at Austin, BRB 1.116, Austin, TX 78712, USA
Abstract:
Following Mongin [J. Econ. Theory 66 (1995) 313; J. Math. Econ. 29 (1998) 331], we study social aggregation of subjective expected utility preferences in a Savage framework. We argue that each of Savage's P3 and P4 are incompatible with the strong Pareto property. A representation theorem for social preferences satisfying Pareto indifference and conforming to the state-dependent expected utility model is provided.