Eliza designs an experiment because she believes that watching violent movies makes people more aggressive. She tests aggressiveness after having participants watch 30 minutes of a violent action movie versus a nonviolent action movie. Her dependent variable in the violent condition asks, "do you feel more violent and aggressive after watching this violent and aggressive movie?"

It hasn't been demonstrated that violent movies make for violent behaviour. Usually, if a person has violent traits, he tends to look for violent movies but there's has to be a pre-determined condition or a violent past involved. A violent movie may trigger that aspect of the person, but if he doesn't have an specific disorder I don't think a violent movie can make a difference because we can distinguish of what is real and what is not. People with violent disorders usually don't know how to differentiate what's real and what's fiction.