From a neat blog posting summarizing some research on sex and intelligence:
By the age of 19, 80% of US males and 75% of women have lost their virginity, and 87% of college students have had sex. But this number appears to be much lower at elite (i.e. more intelligent) colleges. According to the article, only 56% of Princeton undergraduates have had intercourse. At Harvard 59% of the undergraduates are non-virgins, and at MIT, only a slight majority, 51%, have had intercourse. Further, only 65% of MIT graduate students have had sex.
The bar chart of results from a Wellesley college survey is amusing, with the percentage of students who are virgins ranging from 0% for the Art students, up to 83% for the Mathematics students.
The only mystery is why the figure for Computer Science students is only half that for Mathematics. My guess is that it’s because Wellesley is a female-only college, and female computer scientists can basically get on the Internet and find any number of desperate male computer scientists to hook up with.
…another revealing finding from the Counterpoint survey was that while 95% of US men and 70% of women masturbate, this number is only 68% of men and 20% of women at MIT!
So the hypothesis is that smarter people have a lower sex drive. Obviously there are going to be exceptions, however.