New directions in attachment theory and research

The goal of this special issue is to take stock of attachment theory and research as it applies to adolescent and adult relationships. We briefly summarize and comment on the 12 articles included in the issue, placing them into four thematic categories: (i) attachment theory and research viewed from a life history perspective; (ii) biological bases of attachment processes; (iii) relations between the attachment system and other behavioral systems; and (iv) extensions of attachment research in applied directions. Taken together, the 12 articles provide an exciting foundation for future research on attachment and further development of attachment theory.