Why do Women Have Sex? – Science Answers the Call

What makes a woman want to have sex? Is it physical attraction? Love? Loneliness? Jealousy? Boredom? Painful menstrual cramps?

Many women interviewed were having sex purely because they wanted the experience.

It turns out that woman have sex for all of these reasons and more, and that their choices are not arbitrary; there may be evolutionary explanations at work.

Psychologists Cindy Meston and David Buss, both professors at the University of Texas at Austin, decided that the topic of "why women have sex" deserved a book of its own. They've woven scientific research together with a slew of women's voices in their new collaborative work, "Why Women Have Sex," published September 29 by Times Books.

"We do bring in men occasionally by way of contrast, but we wanted to focus exclusively on women so that the complexity of women's sexualpsychology was not given the short shrift, so to speak," said Buss, a leading evolutionary psychologist.

The authors conducted a study from June 2006 to April 2009 that asked women whether they had ever had sex for one of 237 reasons, all of which had emerged in a previous study. About 1,000 women contributed their perspectives. Watch women answer The Question »

It turns out that women's reasons for having sex range from love to pure pleasure to a sense of duty to curiosity to curing a headache. Some women just want to please their partners, and others want an ego boost.

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