All that said, various studies have shown a correlation between undesirable behaviors and lyrics describing or espousing violent, sexist or illegal activities. The American Academy of Pediatrics cites several studies as part of its 2009 "Impact of Music, Music Lyrics, and Music Videos on Children and Youth" report that show a connection between violent lyrical and visual content and aggression, sexual content and sexual activity, sexist content and sexist attitudes. Some studies also show an increase in risk-taking behavior and drug use associated with certain music. Note that many of these studies used music videos, not just audio tracks, in their studies, so it's unclear whether it's the imagery or the lyrical content that's correlated with these behaviors.