quotes from the story:
"The latest study, published in the April issue of the Journal of Adolescent Health, found that teens pledging virginity until marriage are more likely to have oral and anal sex than other teens who have not had intercourse."
"Among virgins, boys who have pledged abstinence were four times more likely to have had anal sex than teens who have remained abstinent but not as part of a pledge, according to the study. Overall, pledgers were six times more likely to have oral sex."
One of the commenters on her LJ observes that the abstinence pledges are specifically heterocentric, and that the "abstinence" movement is also apparently afraid to define closely what they mean by "abstinence", for fear of saying too much.
Ah, unintended effects.