The theoretical work on attachment behavior by John Bowlby and Mary Ainsworth spawned one of the broadest, most creative lines of research in twentieth century psychology. This volume compiles articles discussing attachment theory and research, measurement issues, and contributions of recent theoretical and empirical developments to the study of attachment relationships and personality development. Articles in section 1, "Overview of Attachment Theory," provide an updated primer on the theory, including discussions of the constructs of attachment and internal working models, normal development, effects of attachment disruptions in, and individual differences. Articles in section 2, "Biological Perspectives," stem from Bowlby's reliance on ethology and primate research in theory development and include discussions of how attachment theory fits with other evolutionary biology and psychology theories, attachment-related processes in rats and in primates, and the use of psychophysiological assessment techniques. Articles in section 3, "Attachment in Infancy and Childhood," review empirical research on patterns of attachment in infancy and childhood, while those in section 4, "Attachment in Adolescence and Adulthood," review studies of attachment patterns in adolescence, examine bonds between adult lovers and marital partners, discuss same-sex romantic relationships, and examine the Adult Attachment Interview. Articles in section 5, "Clinical Applications of Attachment Theory and Research," discuss contributions of attachment theory/research to clinical work, focusing on psychopathology and contributions to specific forms of therapy. Articles in section 6, "Emerging Topics and Perspectives," provide a sampling of the wide array of areas into which attachment theory and research are being extended, including caregiver-child relationships, cultural influences, bereavement, the exploratory behavior system, religion, and public policy. Each chapter contains references. (KB)