David Horowitz's Front Page has an interview with Ben Shapiro, author of Porn Generation. It's pretty lengthy, but worth a click. Link. Excerpt:
Watching enough of this stuff does change kids' views and affect their lifestyles. For example, a September 2004 survey published by the American Academy of Pediatrics showed that "adolescents [12-17 years old] who viewed more sexual content at baseline were more likely to initiate intercourse and progress to more advanced noncoital sexual activities during the subsequent year, controlling for respondent characteristics that might otherwise explain these relationships."
Viewing sex on television was also likely to change children's worldviews about sex and morality: "This high-dose exposure to portrayals of sex may affect adolescents' developing beliefs about cultural norms . . . . Social learning theory predicts that teens who see characters having casual sex without experiencing negative consequences will be more likely to adopt the behaviors portrayed. Although televised sexual portrayals can theoretically inhibit sexual activity when they include depictions of sexual risks (such as the possibility of contracting an STD or becoming pregnant), abstinence, or the need for sexual safety, this type of depiction occurs in only 15% of shows with sexual content. In other words, only one of every seven TV shows that include sexual content includes any safe sex messages, and nearly two-thirds of these instances (63%) are minor or inconsequential in their degree of emphasis within the scene. As a result, sexual content on TVC is far more likely to promote sexual activity among US adolescents than it is to discourage it."