In an interesting post, Jason Malloy brings together a number of studies showing that the smarter teens tend not to have sex until they’re older. While it does make for interesting reading, I do not believe this is a simple causal relationship involving only two variables (intelligence and sexual activity). Not by a long shot. Here’s the money quote:

Depending on the specific age and gender, an adolescent with an IQ of 100 was 1.5 to 5 times more likely to have had intercourse than a teen with a score of 120 or 130. Each additional point of IQ increased the odds of virginity by 2.7% for males and 1.7% for females. But higher IQ had a similar relationship across the entire range of romantic/sexual interactions, decreasing the odds that teens had ever kissed or even held hands with a member of the opposite sex at each age.

At least I have something pleasant to cling to as an explanation for my sexually deficient teenage years.