Well.. if TIME magazine says it is so, it must be so. As a real Dr.. and an expert in many fields – specializing in the ladies. My personal studies and experiences say 18yr old girls are more into experimentation with other girls – while 40yr olds just want to BANG BANG BANG. It is the truth.

The Science of Cougar Sex: Why Older Women Lust – TIME.

A new journal article suggests that evolutionary forces also push women to be more sexual, although in some 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 grad 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; the older women also report 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.

Read more: http://www.time.com/time/health/article/0,8599,2002838,00.html#ixzz0tToH8VWF