Judgment (or logical) aggregation theory is logically more powerful than social choice theory and has been put to use … aggregation theory developed by Dokow and Holzman (2010c). This application involves aggregating classifications (specifically … aggregation theory to a more general one …

We provide possibility results on the aggregation of beliefs and tastes for Monotone, Bernoullian and Archimedian … a prior to allow non dictatorial aggregation. A further weakening of this axiom on common-taste acts, where cardinal … the aggregation of ambiguity attitudes …

Observer Theorem. Section 3 does the same job for Harsanyi's Social Aggregation Theorem and discusses Sen's objections against … the utilitarian relevance of either theorem. Section 4 explains why the Social Aggregation Theorem does not carry through …