>>9769757Daily reminder. Women and men were always monogamous and loyal. The majority often only had 1 sexual partner in their life.
https://www.sciencedaily.com/releases/2016/04/160405161120.htmhttp://archive.is/ym6zpSurprisingly, the estimated rates within human populations are quite low--around 1 or 2 percent.
Those rates apparently haven't changed much either, despite the fact that people in the past didn't have access to modern contraceptives.
The collective evidence for low rates of extra-pair paternity challenges the notion that it pays, evolutionarily speaking, to sleep around
https://www.sciencedaily.com/releases/2019/11/191114115934.htmhttp://archive.is/uDFoCThe evidence showed no significant difference in EPP rates between countries despite key religious differences, they report. But they varied widely with socioeconomic status and population density. The EPP rate was much lower among farmers and more well-to-do craftsmen and merchants (about 1%) than among lower class laborers and weavers (about 4%).
EPP rates also rose with population density. Putting the two together, the researchers report that the estimated EPP rates for the families varied by more than one order of magnitude, from about 0.5% among the middle to high classes and farmers living in the most sparsely populated towns to almost 6% for the low socioeconomic classes living in the most densely populated cities.
The researchers say the findings support evolutionary theories suggesting that individual incentives and opportunities for seeking or preventing extra-pair mating should depend on the social context. They also debunk the notion that EPP rates in Western society are generally high, they say, noting that the evidence puts average rates at around 1%.
