The quantity of an individual's freedom is thought to coincide with the width of her opportunity set, and this is defined by taking account of budgetary, institutional and legal constraints to choices. A simple cardinal measure of freedom is proposed on the ground of which some exercises in...

Opportunity sets are defined by taking account of budgetary, institutional and legal constraints. Then a cardinal measure of freedom is proposed which is apt to interpersonal comparisons of opportunity sets. Individual choice freedom may expand when a new good is publicly provided free or at a...