Using a wide range of methodologies, researchers from a number of disciplines have shown that viewing pornography is associated with damaging outcomes. In a study of U.S. college men, researchers found that 83 percent reported seeing mainstream pornography, and that those who did were more likely to say they would commit rape or sexual assault (if they knew they wouldn't be caught) than men who hadn't seen porn in the past 12 months. The same study found that porn consumers were less likely to intervene if they observed a sexual assault taking place. In a study of young teens throughout the southeastern United States, 66 percent of boys reported porn consumption in the past year; this early porn exposure was correlated with perpetration of sexual harassment two years later. A recent meta-analysis of 22 studies between 1978 and 2014 from seven different countries concluded that pornography consumption is associated with an increased likelihood of committing acts of verbal or physical sexual aggression, regardless of age. A 2010 meta-analysis of several studies found "an overall significant positive association between pornography use and attitudes supporting violence against women."