"Several studies have shown that in the long run, habitual exposure to media violence may reduce anxious arousal in response to depictions of violence. Research has found that the more time individuals spent watching violent media depictions, the less emotionally responsive they became to violent stimuli (e.g., Averill, Malstrom, Koriat, & Lazarus, 1972) and the less sympathy they showed for victims of violence in the real world (e.g., Mullin & Linz, 1995). Bartholow, Bushman, and Sestir (2006) used event-related brain potential data (ERPs) to compare responses by violent and nonviolent video game users to violent stimuli and relate them to subsequent aggressive responses in a laboratory task. Bartholow et al. found that the more violent games participants played habitually, the less brain activity they showed in response to violent pictures and the more aggressively they behaved in the subsequent task. In a series of studies with children age 5 to 12, Funk and colleagues demonstrated that habitual usage of violent video games was associated with reduced empathy with others in need of help (Funk, Baldacci, Pasold, & Baumgardner, 2004; Funk, Buchman, Jenks, & Bechtoldt, 2003)."
January 1, 1970
https://en.wikiquote.org/wiki/Violence_in_media