Violent video game play by adolescents is associated with increases in physical aggression over time. The findings were a result of a meta-analysis of 24 studies from around the world from 2010 to 2017 with over 17,000 participants, ages 9 to 19 years-old.
To address assertions that earlier meta-analyses overemphasize the link of violent video game play and aggression since they include "non-serious" actions of aggression, this meta-analysis was restricted to those that measured reports of overt, physical aggression over time. In spite of this rigorous criterion, findings supported the hypothesis that playing violent games is related with subsequent increases in physical aggression.
The study builds on the Dartmouth College research team's emergent body of work that explores the impact of video games on children's behavior, comprising the link concerning mature-rated, risk-glorifying video games and deviant behavior (e.g., smoking, drinking, and risky sex) and the relationship between playing these type of video games and reckless driving among teens.