From the Thesis Abstract: "The recent aftermath of mass shootings in the United States has caused some experts, as well as President Donald Trump, to speculate that a link may exist between violent acts and video gaming. Mass shootings have become a severe problem in America. The National Institute of Justice research has shown that 20 percent of all public mass shootings in the U.S. have occurred between 2014 and 2019. This thesis examines the effects of video gaming on mental health and the link between violent video games and mass shootings, and offers skeptical views by other experts who argue no link exists between mass shootings and video games. Factors associated with violence involving video games and the gamers' behavior may explain what inspires the mass shooters. Although not all video gamers become violent, this thesis contends it is likely individuals with underlying conditions may be vulnerable to committing violent acts by developing internet gaming disorder (IGD)."