The question ‘What does a woman want?’ was, according to Freud, “The great question that has never been answered”. One person trying to answer this question, however, is Meredith Chivers—a psychologist specialising in sexual behaviour whose work was extensively discussed in The New York Times earlier this year.
The article, focusing on female sexuality, is eye-opening in many ways, especially in showing the gulf between male and female sexuality.
The men, on average, responded genitally in what Chivers terms “category specific” ways. […] The men’s minds and genitals were in agreement.
All was different with the women. No matter what their self-proclaimed sexual orientation, they showed, on the whole, strong and swift genital arousal when the screen offered men with men, women with women and women with men. […] With the women, especially the straight women, mind and genitals seemed scarcely to belong to the same person.
via Green Oasis