This tightly edited volume provides an integrative overview of human bonding from infancy through adulthood. Through an attachment lens, the book synthesizes classic and cutting-edge research on close relationships and their profound impact in everyday life. Topics include infant-caregiver attachment, human social nature, child and adolescent social development, mate selection, love and sexual desire, hooking up and online dating, keys to relationship success, predictors and consequences of relationship dissolution, and the role of social connectedness in psychological adjustment and physical health. Readers get a solid grounding in the concepts, theories, and methods that define contemporary relationship science.