Dill, K., Gentile, D., Richter, W., & Dill, J. (2005). Violence, Sex, Race, and Age in Popular Video Games: A Content Analysis. Featuring females: Feminist analyses of media (pp. 115-130). Washington, DC US: American Psychological Association. Retrieved July 16, 2009, doi:10.1037/11213-008

(from the chapter) For this study we measured the prevalence of violence in top-selling video games with emphasis on a detailed description of the nature of the violence. Special attention was given to the interaction of video game violence with the demographics of the video game characters. Of primary interest was how the race, sex, and age of the characters related to roles of power, dominance, and aggression. Also reported are the demographics and portrayals of characters in general, notwithstanding the violent content of the game. This study is unique in its analysis of the content of video games and provides important information about this growing medium. Because the content of video games changes rapidly over time, follow-up investigations are necessary. (PsycINFO Database Record (c) 2008 APA, all rights reserved)