to altruism works well and provides a foundation for a preference-based approach to altruism and fairness …

. This paper examines the determination of precautionary saving when people have access to intra-family risk sharing. I show … that, with uncertain future income, altruism per se can induce time consistent, however, not necessarily ex ante efficient … one. Also welfare and savings effects from social insurance turn out to be sensitive to assumptions about family structure …