The Evolution Of Human Pair Bonding, Friendship, And Sexual Attraction by Michael R Kauth

Integrating evolutionary biology, psychology, and anthropology, this work proposes that romantic pair bonds co-opt ancient affiliative systems originally supporting infant care and adult friendship, with sexual attraction coordinating mating and long-term cooperation. It synthesizes comparative animal research, neuroendocrine mechanisms (e.g., oxytocin and vasopressin), and cross-cultural data to explain patterns of desire, jealousy, and sex-differentiated strategies. Emphasizing flexibility shaped by ecology, social learning, and life-history trade-offs rather than rigid modules, it offers an integrated model linking lust, attraction, and attachment, with implications for friendship dynamics and sexual orientation.

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