Kyle M
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- Mar 20, 2016
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Oh also something to note is that a woman doesn't necessarily need to find a "beta" male to help raise her kids. Male hormones can be altered from just being around pregnancy and newborns, this has been shown in studies. I haven't researched it in a while, but I think an infants crying causes prolactin to rise in males, and possibly T to go down. I'm not sure a woman would want a super beta male though when she is raising children. Someone needs to defend the family.
Testosterone and prolactin are associated with emotional responses to infant cries in new fathers. - PubMed - NCBI
One point I would make about interpreting this experiment is that in many societies (perhaps most) during more relevant evolutionary times, men were around crying babies much less than now. Certain hunter/gatherer tribes, even today, have men spending days or even weeks away from the tribal headquarters hunting or collecting honey. At any rate, the modern system of men sleeping at home every night and being awakened by the baby's cries whenever the woman is, and being encouraged or guilted into taking part of soothing a crying baby, is very new in humans. This data man be more of an indication of how new and disruptive it is, rather than a confirmation that fatherhood per se pushes men towards more beta behavior.
It makes sense that in both sexes, being around a baby that needs cares would alter the physiology of the adult present to give care, right?