"Impressionable children and teens are influenced by the media they consume. Over 60 years of research and over 3,000 studies now have linked violent media content and aggression, cigarette smoking in films and the likelihood teens will take-up smoking, and more recently, exposure to sexual content in entertainment and early onset of sexual activity in teens," Melissa Henson, Director of Communications and Public Education at the Parents Television Council (PTC), an organization that monitors connections between a child's media consumption and their behavior, told FOX411's Pop Tarts column. 

Before recruiting participants, the authors coded the movies for seconds of sexual content, which was defined as any sexual act, from passionate kissing all the way to intercourse. G-rated movies like "The Princess Diaries" contained 42 seconds of sexually-related material, PG-13 movie "Meet Joe Black" had 170 seconds, while another PG-rated movie "My Big Fat Greek Wedding" had 78 seconds.