Greenberg, Cicchetti, and Cummings state that the purpose of Attachment in the Preschool Years is to begin to define the field of preschool attachment. The volume as a whole expands, clearly and succinctly, the study of attachment at all levels: conceptual, methodological, empirical, and clinical. This review focuses on a few key issues: the negotiation of attachment at all periods of development, discontinuity between infant attachment and subsequent development, the construct of working models, the interplay of family context and attachment relationships, and, clinical applications of and contributions to attachment theory.