The APA Task Force's review also doesn't include the latest research on violent video games, since the Task Force only examined studies published until mid-2013. A 2014 study led by Matthew Grizzard at the University at Buffalo indicated that practicing immoral behavior in a virtual environment — such as killing someone in a violent video game — could actually lead to an
increase in prosocial behavior. Contrary to the APA Task Force's report, Grizzard's research found that players would become more sensitive to the moral codes they were violating in the game.