A staggering 98 percent of mass shootings have been committed by men, according to The Violence Project, a nonpartisan research group that tracks U.S. mass shooting data dating back to 1966, reports American University Radio. Researchers say that men, more than women, tend to externalize their problems and look for others to blame, which can translate into anger and violence. And when women do choose violence, guns are not typically their weapon of choice. If men vastly outnumber women as mass shooters, those perpetrators are often a model for the next male shooters, who “see themselves in them,” said Jillian Peterson, a forensic psychologist and professor of criminology and criminal justice at Hamline University. This phenomenon is particularly true among young, white men. Violence Project data show that white men are disproportionately responsible for mass shootings more than any other group.