When a mass shooting occurs, Republican politicians blame mental illness or video games. Placing the blame on video games makes use of an argument that dates back at least to Plato. In the Republic, Plato argues that exposure to art can have a corrupting effect, making people more likely to engage in bad behavior. While Plato focused mainly on the corrupting influence of tragedy (which could cause people to fall victim to inappropriate sadness) he also discussed the corrupting influence of fictional violence. As he saw it, exposure to fictional violence could incline people to real violence. Plato’s solution to the threat was to ban such art from his ideal city.

This argument has some appeal. People are influenced by experiences and repeated exposure to fictional violence could affect how a person feels and thinks. Exposure to non-fiction, such as hateful speech, writings and tweets could influence a person in negative ways. The critical question is whether the influence of video games can be a causal factor in violence, especially a mass shooting.

Determining whether video games are a causal factor in mass shootings involves assessing causation in a population. The challenge is showing whether there would be more mass shootings in a population if everyone played video games than if no one did. If there is a statistically significant difference, then video games can would have a causal influence on violent behavior. So, let us consider this matter.

If video games were a statistically significant causal factor for mass shootings, then we would expect to see the number of mass shootings varying with the number of video game players in a country. While the United States is a leader in both video game revenues and mass shootings, other countries also have large populations of gamers, yet do not have a corresponding level of mass shootings. As such, video games would not seem to be a significant causal factor in mass shootings.

This does not prove that video games are not a factor at all. Perhaps video games combined with other factors do cause mass shootings. So, we need to look at the differences between the United States and other countries to see what factors combine with video games to cause mass shootings. Now, If video games play a causal role in mass shootings, the question is the extent to which they have this effect.

About 67% of Americans play video games of one form or another. But the concern is not with video games but with violent video games like Call of Duty and Fortnite. While most Americans do not play these games, millions of Americans do. The overwhelming majority of people who play violent video games never become mass shooters. As such, if violent video games do have causal influence, it must be extremely limited, otherwise mass shootings would be more common.

Some politicians have tried to make use of the method of difference to argue that video games are causing mass shootings. This method involves comparing cases in which an effect has occurred to similar cases in which the effect did not occur and finding a plausible difference that could be the cause. This method is a good one but must be used with care to avoid falling into error. The gist of the argument made by these politicians is to conclude that violent video games cause mass shootings because mass shootings increased when violent video games were created. Because of the difference between before and after, video games are taken to be a causal factor.

While it is true that the number of mass shootings correlates with the number of violent video games available (both have increased over the years), correlation is not causation. After all, the number of tech startups has also increased, yet it would be absurd to conclude that they are causing mass shootings. To simply assert that since mass shootings increased as more violent video games appeared would be to commit the cum hoc fallacy, that because two things correlate, there must be a causal connection. This does not entail that violent video games do not play a role, but more is needed than mere correlation. As argued above, there seems to be no significant causal connection between violent video games and mass shootings; they merely happen to correlate as do many other things.

While blaming video games has political value, it does nothing to address the problem of mass shooting since there seems to be no meaningful causal connection between real violence and video games.

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