New York University tested 200 people for psychopathic traits and also had them listen to 260 songs. All of the results haven't been published yet, but they did find a correlation between the songs psychopaths liked versus the ones they didn't.
Songs that were high on psychopaths liking...
Justin Bieber - What Do You Mean
Lose Yourself - Eminem
No Diggity - Blackstreet
Meanwhile, on the low end were...