A welfarist way of allocating resources consists in 1) equipping individuals with comparable indices of their well-being and 2) applying a unique aggregation rule to individual well-being levels. An equality of opportunity way of allocating resources consists in 1) making the distinction between...

We develop an approach which escapes Arrow’s impossibility by relying on information about agents’ indifference curves instead of utilities. In a model where agents have unequal production skills and different preferences, we characterize social ordering functions which rely only on ordinal...

<Para ID="Par1">Approval voting has attracted considerable attention in voting theory, but it has rarely been investigated in an Arrovian framework of collective preference (”social welfare”) functions and never been connected with Arrow’s impossibility theorem. The article explores these two directions....</para>