Anthropologist Joan Silk's work shows that female baboons who have a core of female friends show lower levels of stress via their cortisol levels, they live longer and they have more surviving offspring.
Rad antropologinje Joan Silk pokazuje da ženke pavijana koje imaju jezgru prijateljica, imaju i niže razine stresa zbog nižih razina kortizola, žive dulje i imaju više potomaka koji prežive.