Eleven expert video game players and ten non-video game players were recruited. Participants were considered experts if they played seven or more hours of video games per week for the past two years. Experts were selected such that they had high levels of expertise with action video games such as Halo, Grand Theft Auto and Unreal Tournament. However, expert video game players also had experience with a wide variety of game genres including role-playing, strategy, and sports games. Non-gamers were selected such that they played video games one hour a week or less. During initial participant recruitment, it was found that males were much more likely to report having video game expertise, and thus cross-sectional groups were restricted to male participants.