And for years, following these tenets, the theory’s focus has been on how children develop vis-a-vis the attachments-whether secure or insecure-they form with their caregivers. In the therapy room, this has meant working with individuals one-on-one, with the therapist assuming the role of the attachment figure in order to provide a secure base for treating clients’ problems that arose from troubled interpersonal relationships in childhood. Here, Daniel A. Hughes, an eminent clinician and attachment specialist, is the first to expand this traditional model, applying attachment theory to a family therapy setting.