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The Most Underappreciated Fact

The first big, basic difference has to do with what I consider to be the most underappreciated fact about gender. Consider this question: What percent of our ancestors were women?

It's not a trick question, and it's not 50%. True, about half the people who ever lived were women, but that's not the question. We're asking about all the people who ever lived who have a descendant living today. Or, put another way, yes, every baby has both a mother and a father, but some of those parents had multiple children.

Recent research using DNA analysis answered this question about two years ago. Today's human population is descended from twice as many women as men.

I think this difference is the single most underappreciated fact about gender. To get that kind of difference, you had to have something like, throughout the entire history of the human race, maybe 80% of women but only 40% of men reproduced.

Right now our field is having a lively debate about how much behavior can be explained by evolutionary theory. But if evolution explains anything at all, it explains things related to reproduction, because reproduction is at the heart of natural selection. Basically, the traits that were most effective for reproduction would be at the center of evolutionary psychology. It would be shocking if these vastly different reproductive odds for men and women failed to produce some personality differences.

For women throughout history (and prehistory), the odds of reproducing have been pretty good. Later in this talk we will ponder things like, why was it so rare for a hundred women to get together and build a ship and sail off to explore unknown regions, whereas men have fairly regularly done such things? But taking chances like that would be stupid, from the perspective of a biological organism seeking to reproduce. They might drown or be killed by savages or catch a disease. For women, the optimal thing to do is go along with the crowd, be nice, play it safe. The odds are good that men will come along and offer sex and you'll be able to have babies. All that matters is choosing the best offer. We're descended from women who played it safe.

For men, the outlook was radically different. If you go along with the crowd and play it safe, the odds are you won't have children. Most men who ever lived did not have descendants who are alive today. Their lines were dead ends. Hence it was necessary to take chances, try new things, be creative, explore other possibilities. Sailing off into the unknown may be risky, and you might drown or be killed or whatever, but then again if you stay home you won't reproduce anyway. We're most descended from the type of men who made the risky voyage and managed to come back rich. In that case he would finally get a good chance to pass on his genes. We're descended from men who took chances (and were lucky).

The huge difference in reproductive success very likely contributed to some personality differences, because different traits pointed the way to success. Women did best by minimizing risks, whereas the successful men were the ones who took chances. Ambition and competitive striving probably mattered more to male success (measured in offspring) than female. Creativity was probably more necessary, to help the individual man stand out in some way. Even the sex drive difference was relevant: For many men, there would be few chances to reproduce and so they had to be ready for every sexual opportunity. If a man said "not today, I have a headache," he might miss his only chance.

Another crucial point. The danger of having no children is only one side of the male coin. Every child has a biological mother and father, and so if there were only half as many fathers as mothers among our ancestors, then some of those fathers had lots of children.

Look at it this way. Most women have only a few children, and hardly any have more than a dozen - but many fathers have had more than a few, and some men have actually had several dozen, even hundreds of kids.

In terms of the biological competition to produce offspring, then, men outnumbered women both among the losers and among the biggest winners.

To put this in more subjective terms: When I walk around and try to look at men and women as if seeing them for the first time, it's hard to escape the impression (sorry, guys!) that women are simply more likeable and lovable than men. (This I think explains the "WAW effect" mentioned earlier.) Men might wish to be lovable, and men can and do manage to get women to love them (so the ability is there), but men have other priorities, other motivations. For women, being lovable was the key to attracting the best mate. For men, however, it was more a matter of beating out lots of other men even to have a chance for a mate.

Tradeoffs again: perhaps nature designed women to seek to be lovable, whereas men were designed to strive, mostly unsuccessfully, for greatness.

And it was worth it, even despite the "mostly unsuccessfully" part. Experts estimate Genghis Khan had several hundred and perhaps more than a thousand children. He took big risks and eventually conquered most of the known world. For him, the big risks led to huge payoffs in offspring. My point is that no woman, even if she conquered twice as much territory as Genghis Khan, could have had a thousand children. Striving for greatness in that sense offered the human female no such biological payoff. For the man, the possibility was there, and so the blood of Genghis Khan runs through a large segment of today's human population. By definition, only a few men can achieve greatness, but for the few men who do, the gains have been real. And we are descended from those great men much more than from other men. Remember, most of the mediocre men left no descendants at all.


pic not related, but badass.

dragonchild:
And there's the rub. I LIKE the exceptions.

Articles like this always piss off them people who are exceptions. The anomalies. My father is a kind sensitive emotional sort who fixes engines and welds. My mother has the empathy of a killer robot and likes roses on goddamned everything. Things never match up to some supposed standard. And there's a certain percentage of people play acting to match up to what they think they are supposed to be like.

WinoRhino:
Men use communication to influence an outcome and solve problems. Women use communication to establish bonds and nurture. Communication, therefore, is work for the male, and a source of comfort for the female.

I use communication primarily as a way to transmit and receive information. Terrible at establishing bonds. I loathe the telephone. If I've been on friendly terms with you for years in person and I move away, there's little chance I'll stay in contact with you. However, if you've been communicating with me through e-mail for the last 15 years, I will keep e-mailing you. And I expect to be amused somehow.