Attachment theory has triggered an explosion of research into family relationships, and has provided a conceptual basis for the work of practitioners. This volume brings research and practice perspectives to bear on the adult couple relationship, and provides a framework for assessing and working with secure and insecure partnerships. Divided into three parts, the book looks at what is meant by secure and insecure attachment in the couple, describes how theory and research have been applied to practice, and how practice has added to the understanding of the complex problems that couples bring to therapy, and examines the significance of training and the organization of work for effective practice with couples.