Dec 4, 2019
Episode 43 –
The Murder of Steven Davis
Sources for the Story Portion:
Research Topic - Mother's Instinct
A woman named Sarah Blaffer Hrdy collected a saliva sample, met her new grandson for the first time, and then collected another sample. She had her husband do the same thing. She then took the saliva sampled to a lab where it was revealed that her levels of a chemical called Oxytocin spiked by 63 percent after she met her grandson. In her husband the initial spike showed a 26 percent increase after the first meeting but after a few days it increased to 63 percent as well. Oxytocin is the “feel good” hormone that is released when you orgasm, make eye contact, or hug someone. It is a complex Neuropeptide that plays a role in pair bonding, womb contraction, and the release of breast milk in mammals. It was interesting to me that both Sarah and her husband released the same levels of this Neuropeptide but it took her husband longer.
Of Mice and Cannibal Virgins
In 2015 a study was co-authored in the journal Nature by Bianca J. Marlin. It studied the effect of Oxytocin on mice. Female virgin lab mice would hear the cries of mice pups they would either ignore them or they would find them and eat them. If the lab mouse was a mother, she would go to the pup and care for it. They then took the same mice that were eating the pups before and injected them with Oxytocin. Their behavior changed from cannibalizing the pups to retrieving them and caring for them. When the researchers injected male mice with Oxytocin they found that they would eventually alter their behavior but again, it just took longer. The virgin females learned to retrieve the pups in 12 hours. It took the males three to five days.
Back to our Roots
In the 1980’s and 90’s an anthropologist from the University of Utah named Kristen Hawkes spent time in Tanzania with a group of hunter-gatherers canned the Hadza tribe. Their time there showed that the older women in the tribe played a very important role economically. Humans are still vulnerable after they wean themselves from their mothers so grandmothers along with sisters and daughters help with child raising. This allows the mother to either return to her job or bear more children.
There is another hunter-gatherer tribe in Bolivia called the Tsimané (Chi-man-EE) where women gained a higher status in the tribe by having more and more healthy children. They had their first child at around 18 years old and had as many as nine children. Now in a lot of western countries it is not as important culturally to have children. I know a lot of people that didn't want children at all (me until not long ago). Our society doesn’t measure a woman's worth by how many children she has so some females are moving away from having kids. There isn't anything wrong with that at all. Some people just don’t have baby fever and that shows how humans as a species are changing psychologically based on how we measure success.
Article for Bitch Banter: