USA Today reports that Norway killer Anders Breivik played the computer game "Modern Warfare" for 16 months starting in January 2010, primarily to get a feel for how to use rifle sights. In 2006 he devoted a full year to playing "World of Warcraft," for 16 hours a day. Whether target practice can be had by using computer games is hotly disputed. Christopher Ferguson, of Texas A&M International University, said that action games can improve "visuospatial cognition," he said it's difficult to say whether Breivik could have improved his accuracy by playing Modern Warfare. "Let us keep in mind too that he was shooting kids on an island from which they could not escape easily," Ferguson said. "That does not require great accuracy."