Markward, M. J., Cline, S., et al. (2001). Group socialization, the internet and school shootings. International Journal of Adolescence & Youth, 10 (1-2), 135-146.

Abstract:  Discusses the effects of the Internet and computer games on feelings of isolation and desperation among male adolescents involved in school shootings. Traditional male socialization, early victimization, and peer support from the Internet have combined to incite school shooters to turn their hostility outward, targeting those they perceive to be bullies. Findings suggest that the Internet may offer a new form of socialization for alienated, isolated, and victimized male adolescents, and may act as a source of support of which parents have little knowledge. (PsycINFO Database Record (c) 2004 APA, all rights reserved)