This paper provides an axiomatic approach to the problem of measuring the informationcontained in opportunity sets. In many choice situations, the items that can be selectedfrom an opportunity set (the objects of choice) do not coincide with the consequencesthey induce (the objects a...

This note investigates the extension of Roberts' price-independent welfare prescriptions toalternatives in which population size and composition can vary. We show that ethicallyunsatisfactory orderings result. Suppose that a single person is to be added to a populationthat is unaected in utility...

In pure population problems, a single resource is to be distributed equally among theagents in a society, and the social planner chooses population size(s) and per-capita consumption(s) for each resource constraint and set of feasible population sizes within thedomain of the solution...