e generosity and trust, the drive to make social attachments, heightened memory for emotional experiences, keen imagination and mental flexibility. Oxytocin, closely related to estrogen, is also associated with several prosocial traits, including trust, reading emotions in others and theory of mind. So I

osity toward those outside. Oxytocin may therefore facilitate our ability to take out the competition even if this means killing another human being. Oxytocin is two-faced, cuddling with its left profile and harming with its right. This is a small sampling of the ways in which our promiscuous brain enables