[转帖]科研显示出轨的女人是因为她的基因

2006-01-12 · 433 阅读

<H4>Women who cheat on spouses can blame genes</H4>
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Study suggests that evolution is factor during ovulation
January 10, 2006
FREE PRESS NEWS SERVICES
In what may sound more like an episode of "Desperate Housewives" than real life, researchers at the University of California, Los Angeles and University of New Mexico suggest that women who feel an urge for sex outside of their marriages might be hearing an evolutionary call to improve the species.
The new research, reported in the January issue of Hormones and Behavior, suggests that during ovulation, when women with a higher level of testosterone are ready to conceive, nature may encourage them to look for what they consider to be the best possible gene pool.
The stark reality: Women may look for an appealing donor if they don't find their mates sexually attractive.
"The mating market is driven by supply and demand, and therefore not all women will attract long-term mates offering good genes," the study authors stated. Women innately deduce that a man they find sexy has better genes to pass on to a baby, they say.
"Ancestrally, these women may have benefited from a strategy in which they secured investment from a long-term mate and obtained genetic benefits from extra-pair partners."
To some, this may sound like a highbrow explanation of love, lust and what drives people to become jealous. But it may also be another example that the human species isn't far removed from the Darwinian notion of survival of the fittest.
"What is at stake is not just the loss of face or the loss of love," said coauthor Martie G. Haselton, an assistant professor of communication studies and psychology at UCLA. "This is about Darwinian prosperity. Males who did not successfully guard their mates are not our ancestors."
Researchers contend that men who are generally less attractive to women tend to guard their ovulating wives with particularly attentive and possessive behavior.
The study is based on responses from 38 women from a large unnamed U.S. university. They were asked to rate their partners' sexual attractiveness and submitted 35 diary-like entries rating the strength of their attractions to men other than their mates, and the frequency with which they flirted or otherwise acted out those attractions.
For a second study, Haselton recruited 43 women who similarly rated their partners' sexual attractiveness on a day near ovulation and on a nonfertile day.
Those findings, to be published in Evolution and Human Behavior, confirmed the first study, Haselton said.
"We aren't saying that women are genetically programmed to be unfaithful," said study coauthor Steven Gangestad.
"They aren't robots following genetic instruction. You have psychology, biology that is some product of selection. But relationships are mixtures of loving aspects and conflicts, and this is a part of conflict."

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