Why Beautiful Women Marry Less Attractive Men?

But a new study by Satoshi Kanazawa, an evolutionary psychologist at the London School of Economics, suggests it may be a simple supply-and-demand issue: there are more beautiful women in the world than there are handsome men. Why? Kanazawa argues it’s because good-looking parents are 36% more likely to have a baby daughter as their first child than a baby son — which suggests, evolutionarily speaking, that beauty is a trait more valuable for women than for men. The study was conducted with data from 3,000 Americans, derived from the National Longitudinal Study of Adolescent Health, and was published in the Journal of Theoretical Biology. According to this news article, “Selection pressure means when parents have traits they can pass on that are better for boys than for girls, they are more likely to have boys. Such traits include large size, strength and aggression, which might help a man compete for mates. On the other hand, parents with heritable traits that are more advantageous to girls are more likely to have daughters.” Beauty is apparently just one “female” trait. Kanazawa has done previous research suggesting that nurses, social workers and kindergarten teachers — those with “empathic” traits — also had more daughters than sons. Meanwhile, he found that scientists, mathematicians and engineers are more likely to have sons than daughters. It is good that Kanazawa is only a researcher and not, say, the president of Harvard. If he were, that last finding about scientists may have gotten him fired.

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