A study by Markey and Markey (2010) indicates that persons with high neuroticism, low agreeableness, and low conscientiousness personality traits are more likely be influences violent video games. Interestingly, in conclusions, they write:
Although the incidences of violence, particularly school violence, linked to video games are alarming, what should perhaps surprise us more is that there are not more VVG-driven violent episodes. Given the number of youths who regularly engage in VVG play and the general concern regarding this media, it would seem likely that resulting violent episodes would be a regular occurrence. And yet, daily reports of mass violence are not reported. It appears that the vast majority of individuals exposed to VVGs do not become violent in the “real world.” (pp. 90.)
Is there hope for more nuanced media effect studies?
Markey & Markey 2010. Vulnerability to Violent Video Games: A Review and Integration of Personality Research. Review of General Psychology, 14: 2, 82–91. http://www.apa.org/pubs/journals/releases/gpr-14-2-82.pdf (DOI=10.1037/a0019000).