Holtz, P., & Appel, M. (2011). Internet use and video gaming predict problem behavior in early adolescence. Journal Of Adolescence, 34(1), 49-58. doi:10.1016/j.adolescence.2010.02.004

In early adolescence, the time spent using the Internet and video games is higher than in any other present-day age group. Due to age-inappropriate web and gaming content, the impact of new media use on teenagers is a matter of public and scientific concern. Based on current theories on inappropriate media use, a study was conducted that comprised 205 adolescents aged 10–14 years (Md=13). Individuals were identified who showed clinically relevant problem behavior according to the problem scales of the Youth Self Report (YSR). Online gaming, communicational Internet use, and playing first-person shooters were predictive of externalizing behavior problems (aggression, delinquency). Playing online role-playing games was predictive of internalizing problem behavior (including withdrawal and anxiety). Parent-child communication about Internet activities was negatively related to problem behavior. (PsycINFO Database Record (c) 2012 APA, all rights reserved)