Men who cheat on their spouses have always enjoyed an expedient explanation: Evolution made me do it. Many articles (here is one, and here is another), especially in recent years, have explored the theory that men sleep around because evolution has programmed them to seek fertile (and, conveniently, younger) wombs.
But what about women? If it's really true that evolution can cause a man to risk his marriage, what effect does that have on women's sexuality?
A new journal article suggests that evolutionary forces also push women to be more sexual, although in unexpected ways. University of Texas psychologist David Buss wrote the article, which appears in the July issue of Personality and Individual Differences, with the help of three graduate students, Judith Easton (who is listed as lead author), Jaime Confer and Cari Goetz. Buss, Easton and their colleagues found that women in their 30s and early 40s are significantly more sexual than younger women. Women ages 27 through 45 report not only having more sexual fantasies (and more intense sexual fantasies) than women ages 18 through 26 but also having more sex, period. And they are more willing than younger women to have casual sex, even one-night stands. In other words, despite the girls-gone-wild image of promiscuous college women, it is women in their middle years who are America's most sexually industrious.
一篇最新的文章指出，物種演化也促成了女性在某些出乎意料之外的情況下，有更強的性慾望。德州大學心理學家大衛巴斯(David Buss)在三位研究生(列為此篇主要作者的Judith Easton，Jaime Confer以及Cari Goetz)的幫忙下，於七月在社會與人格心理學(Personality and Individual Differences)發表了一篇研究指出，他們發現在界於30歲及40歲出頭的女性，比起較年輕的女性們，有更強的性慾。而27歲到45歲間的女人，也比18歲到26歲的女孩，有更多且更強烈的性幻想。且她們對於逢場作戲的接受度也更高，即使是一夜情也可以。換言之，儘管那些在大學搞雜交的女大生形象在人們心中極為淫亂，但中年女性才是真正全美國最勤於性交的族群。
By contrast, men's sexual interest and output, usually measured by a reported number of orgasms per week, peaks in the teen years and then settles to a steady level (an average of three orgasms per week) for most of their lives. As I pointed out in March, most men remain sexually active into their 70s. According to the new study, as well as the study I wrote about in March, women's sexual ardor declines precipitously after menopause.
Why would women be more sexually active in their middle years than in their teens and 20s? Buss and his students say evolution has encouraged women to be more sexually active as their fertility begins to decline and as menopause approaches.
Here's how their theory works:
Our female ancestors grew accustomed to watching many of their children — perhaps as many as half — die of various diseases, starvation, warfare and so on before being able to have kids of their own. This trauma left a psychological imprint to bear as many children as possible. Becoming pregnant is much easier for women and girls in their teens and early 20s — so much easier that they need not spend much time having sex.
However, after the mid-20s, the lizard-brain impulse to have more kids faces a stark reality: it's harder and harder to get pregnant as a woman's remaining eggs age. And so women in their middle years respond by seeking more and more sex.
i feel the teen-agers are very high sexual desire also
得到专家的庇护 我再也不怕了 可以放心大胆了 哈哈哈哈