“Can’t find a better man” — An EP take on polygamy
As the next in my series on evolutionary psychology I wanted to highlight the unusual take that Satoshi Kanazawa gave on the subject of polygamy over at his blog. Here are some excerpts:
Contrary to popular belief, most women benefit from polygynous society, and most men benefit from monogamous society. This is because polygynous society allows some women to share a resourceful man of high status. George Bernard Shaw (who was one of the founders of the London School of Economics and Political Science where I teach) put it best, when he observed, “The maternal instinct leads a woman to prefer a tenth share in a first rate man to the exclusive possession of a third rate one.â€
In contrast, most men benefit from monogamous society. Given a 50-50 sex ratio, monogamous society virtually guarantees a wife for every man, even a third-rate one. Under polygyny, some third-rate men may not find a wife at all, or, even if they are lucky enough to find one, their wife will not be as desirable as the one they can secure for themselves under monogamy, because under polygyny more desirable women would have become the second, third, or tenth wife of more desirable men.
The exceptions to this rule are highly desirable women, who benefit from monogamous society, and highly desirable men, who benefit from polygynous society. A highly desirable woman can marry a highly desirable man under any circumstances, but under polygyny she’d have to share her desirable husband with other women, whereas under monogamy she can monopolize him. A highly desirable man can acquire multiple wives under polygyny, but must confine himself to only one wife (albeit a highly desirable one) under monogamy.