Margaret Talbot reports in The New Yorker on how religion influences what evangelical teens say they think about sex - and who it impoacts what they actually do:
Regnerus argues that religion is a good indicator of attitudes toward sex, but a poor one of sexual behavior, and that this gap is especially wide among teen-agers who identify themselves as evangelical. The vast majority of white evangelical adolescents—seventy-four per cent—say that they believe in abstaining from sex before marriage... 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.