Female and male primates often form close bonds, but not purely out of affection. Close relationships usually evolve when there is a clear benefit for both parties, with protection and reproductive ...

Biological anthropologists and evolutionary psychologists commonly take it for granted that human monogamy has a biological basis. Desmond Morris was an influential early advocate. His 1967 ...

New study finds that large group size and mating systems where males have multiple mates drove evolution of deeper male voices in primates, including humans UNIVERSITY PARK, Pa. — Deeper male voices ...

Watching a performance of Henrik Ibsen’s play Ghosts as an undergraduate, I was appalled by the dawning realization that young Oswald had congenital syphilis as collateral damage from his father’s ...

Humans may be far more monogamous by nature than previously thought, researchers say. Monogamy in humans is comparable more to the exclusive mating seen in meerkats and beavers than in our primate ...

Why be social? And, why not be? What are the costs and benefits of sociality, and what types of sociality characterize nonhuman primates? Given all of these potential costs of group living, why do so ...