Two studies addressed the implications of concordance versus discrepancy of attachment representations in individuals at 2 stages in their marital relationships. Engaged (n ϭ 157) and dating (n ϭ 101) couples participated in a multimethod 6-year longitudinal study of adult attachment. Individuals completed the Adult Attachment Interview (AAI), the Current Relationship Interview (CRI), and various questionnaires and were observed in interactions with partners. On the basis of AAI and CRI classifications, participants were placed in one of four groups: Secure AAI /Secure CRI , Secure AAI /Insecure CRI , Insecure AAI /Secure CRI , or Insecure AAI /Insecure CRI . Each of the configurations showed a particular pattern of behavior, feelings about relationships and the self, and likelihood of relationship breakup. The findings of the studies address important points about the protective effects of attachment security and have interesting implications for the extension of attachment theory into adulthood.The value of attachment theory in understanding marriage rests in large part on the theory's emphasis on links between childhood relationships and later marital success, "links . . . that are underemphasized in or absent from exchange or behavioral theories" (Karney & Bradbury, 1995, p. 6). However, attachment theory has been criticized for its failure to describe how personal history and individual differences "affect the development of a marriage once two people with different relationship needs come together" (Karney & Bradbury, 1995, p. 6).The goal of the attachment behavioral system is to promote safety (and felt security) through a secure base relationship with an attachment figure. The theory focuses on how relationships with attachment figures have an impact on development, adaptive functioning, stress management, safety, and well-being. The attachment system provides an organizational framework for requesting help when needed and for recognizing requests for help and providing support (Crowell, Treboux, Gao, et al., 2002). Given this function, individual differences in attachment organization can be expected to play a role in the development of marriage and the challenges faced by couples (Paley, Cox, Harter, & Margand, 2002).In adult relationships, individual differences in the cognitive organization of the attachment system have at least two components. The first organizing element is the generalized representation of attachment that has its origins or foundation in childhood attachment experiences with caregivers and that generalizes to other attachment experiences and relationships (Bowlby, 1969(Bowlby, / 1982. The second is the specific representation of attachment that emerges out of attachment experiences within the adult partnership. In the two studies presented here, we investigated the implications of individual differences in configurations (consistency vs. discrepancy) of adults' generalized and specific attachment representations for their relationships with partners and experiences of stressful li...