A widely publicized 2006 study suggested that the more kids are exposed to sex in the media, the more likely they are to have sex before age 16. A new study from Temple disputes the link. Psychologist Laurence Steinberg used the same data as the older study, but he used a more conservative statistical method in making his analysis. He first matched teens in terms of relationships with parents, upbringing, school performance, religiousness and sexual activity among their friends. Then he compared how much sexy media they consumed, and their levels of sexual activity. He says once the other factors were controlled for, the link between media and sexual activity disappears. Steinberg says upbringing, not media, is the biggest influence on sexual behavior in teens.