Geography of the Family.

We study the residential choice of siblings who are altruistic towards their parents. If some siblings moves further away, he or she can shift some of the burden of takin care for the parents to his or her siblings. Thus, siblings have a strategic incentive to move away that only children do not have. Siblings locate futher away from parents than only children, and, for some preferences, asymmetric location patterns emerge. These theoretical predictions are also confirmed by empirical data.