Listening to pundits and politicians, you'd think that the relationship between violent video games and aggressive behavior in children is clear. Children who play violent video games are more likely to be socially isolated and have poor interpersonal skills. Violent games can trigger real-world violence. The best way to protect our kids is to keep them away from games such as Grand Theft Auto that are rated M for Mature. Right?

Wrong. In fact, many parents are worried about the wrong things

In 2004, Lawrence Kutner, PhD, and Cheryl K. Olson, ScD, cofounders and directors of the...