The amount of sex kids see in movies could influence their sexual behavior later in life, a new study says.

In the study, young teens who watched movies with more sexual content tended to become sexually active at an earlier age, and engaged in riskier sexual behaviors, compared with those who watched movies with less sexual content.

The study found an association, and not a cause-effect link. However, “sensation seeking, or the tendency to seek more novel and intense sexual stimulation, does seem to increase in young people who watched more movies with sexually explicit content,” said study researcher Ross O’Hara, a researcher at the University of Missouri.

O’Hara and colleagues analyzed information from 1,228 kids who were 12 and 14 years old at the study’s start.

Each participant reported which movies they had seen out of a list of the 50 top-grossing films from 1998 to 2004. These films had been evaluated to measure their sexual content.

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