Bristol Palin Is Pretty Typical

Annals of Sociology: Red Sex, Blue Sex: Reporting & Essays: The New Yorker

The vast majority of white evangelical adolescents—seventy-four per cent—say that they believe in abstaining from sex before marriage. (Only half of mainline Protestants, and a quarter of Jews, say that they believe in abstinence.) Moreover, among the major religious groups, evangelical virgins are the least likely to anticipate that sex will be pleasurable, and the most likely to believe that having sex will cause their partners to lose respect for them. (Jews most often cite pleasure as a reason to have sex, and say that an unplanned pregnancy would be an embarrassment.) But, according to Add Health data, evangelical teen-agers are more sexually active than Mormons, mainline Protestants, and Jews. On average, white evangelical Protestants make their “sexual début”—to use the festive term of social-science researchers—shortly after turning sixteen. Among major religious groups, only black Protestants begin having sex earlier.

There's only so much faith available in the face of hard reality. It's difficult to understand how evangelicals, sincere though they may be, can continue to push an agenda totally transparent to their children's hormones.