This volume considers the impact that changing family norms have had on the responsibilities that the law allocates to people in family relationships. Contributions are drawn from a wide variety of jurisdictions in which scholars, lawyers, judges and policy-makers have been trying to discern what the appropriate correlation should be between the responsibilities that people undertake in family settings and the law that regulates family responsibilities. Part I looks at the changes that have occurred in adult relationships and what they have done for our sense of the family responsibilities that adults take for one another. Part II reflects on the changing nature of the parental relationship in order to reconsider the way in which changing family structures affect the responsibilities we think people raising children should have. The third part brings the rights discourse that has dominated jurisprudence for much of the last fifty years into the discussion of family transformation and the responsibilities to which it gives rise. In the final section the authors reflect on the difficulties of trying to resolve the meaning of responsibility in a world of changing families. The collection brings together some of the most eminent and imaginative scholars and judges working in this area. It will be a valuable resource for all those interested in the legal regulation of the transforming family.