How oxytocin and vasopressin were repurposed through evolution to serve social functions

This 2013 primate summary study showed how nonsocial behaviors, neurology and neurochemicals were repurposed through evolution to serve social functions.

Oxytocin and vasopressin retained their:

  • water regulation,
  • reproduction, and
  • anxiety relief

functionalities while they also evolved to become instrumental in:

  • pair-bonding,
  • parental care,
  • selective aggression,
  • social prominence,
  • generosity, and
  • trust.

http://www.pnas.org/content/110/Supplement_2/10387.full “Neuroethology of primate social behavior”

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