Quote of the Day
Despite considerable cultural differences, a striking uniformity is argued to exist in human preferences for concealing sexual intercourse from the sensory perception of conspecifics. However, no systematic accounts support this claim, with only limited attempts to understand the selective pressures acting on the evolution of this preference. Here, I combine cross-cultural and cross-species comparative approaches to investigate these topics. First, an analysis of more than 4572 ethnographies from 249 cultures presents systematic evidence that the preference to conceal mating is widespread across cultures. Second, I argue that current anthropological hypotheses do not sufficiently explain why habitual concealment of mating evolved in humans but is only seldom exhibited by other social species. Third, I introduce the cooperation maintenance hypothesis, which postulates that humans, and a specific category of non-human species, conceal matings to prevent sexual arousal in witnesses (proximate explanation). This allows them to simultaneously maintain mating control over their partner(s) and cooperation with group members who are prevented from mating (ultimate explanations). I conclude by presenting a comparative framework and predictions to be tested across species and human cultures
Yitzchak Ben Mocha
June 7, 2020
Why do human and non-human species conceal mating? The cooperation maintenance hypothesis | Proceedings of the Royal Society B: Biological Sciences
Interesting.
I didn’t read the paper in detail, but it appears to me he is ignoring a significant subculture. There are lots of people who video their sexual activities and post the video on the Internet. There are sex clubs in all western large cities. At these clubs’ people have sex with their spouse in front of other people. They also have sex with people not their spouse in group settings. If this were an evolutionary beneficial behavior, why would people seek out others and places to defy the norm?
I agree that this is far from mainstream. And I have often wondered why people seek seclusion. Growing up on the farm it was common to see the cattle, cats, and chickens mating. It just did not make sense to me that people were so private about it. There was no emotional damage to any of the animals. And it was my understanding chimp, monkeys and other primates mated in public. So, what is going on with humans?
If Mocha’s hypothesis is correct, it’s a restriction created by men for their benefit. One would then expect women to be more inclined than men to engage in public sex. I don’t believe this is the case. On the other hand, women are much noisier during sex than men. This lends credence to the idea that they have an evolutionary bias toward getting attention when they are highly aroused.
I’m glad Mocha put some thought into it. His hypothesizes are far better than anything I came up with. I’m not entirely convinced they are correct, but they are worth discussing and testing.
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