Taking risks on behalf of another

A growing number of decision theorists have, in recent years, defended the view that rationality is permissive under risk: Dierent rational agents may be more or less risk-averse or risk-inclined. This can result in them making dierent choices under risk even if they value outcomes in exactly the same way. One pressing question that arises once we grant such permissiveness is what attitude to risk we should implement when choosing on behalf of other people. Are we permitted to implement any of the rationally permissible risk attitudes, is there some specic risk attitude that is required when choosing for others, or are we required to defer to the risk attitudes of the people on whose behalf we are choosing? This article elaborates on this question, explains its wider practical and theoretical signicance, provides an overview of existing answers, and explores how to go about providing a more systematic account of how to choose on behalf of others in risky contexts.