Two appealing independence properties have been used by us to characterize the egalitarian, utilization and relative egalitarian choice functions.

This paper was written when I was visiting the Centre for Research in Economics and Statistics (CREST), ENSAE (France) during November and December 1993 on a French government fellowship. I would like to thank my hosts for ...

In this paper we study the responsiveness of choice functions to shifts in multiattribute choice problems.