Did you know that playing violent multiplayer games will make you more aggressive against strangers than friends? That’s the conclusion of a new study published in the latest issue of the Evolution and Human Behavior science journal. PC World’s Game On column also looked at the study.
The study, conducted by psychologists from the University of Missouri, observed 42 young men divided into 14 teams of three. The players played Unreal Tournament 2004 within their team and against other teams. When playing against teammates, the mode was Deathmatch. When playing against other teams, the mode was Onslaught. Before and after each match, the testosterone and cortisol levels of each player was tested.
According to the study’s abstract from the journal’s web site:
For 14 teams of three young men, salivary testosterone and cortisol were assessed twice before and twice after competing in within-group and between-group video games that simulated violent male–male competition. Men who contributed the most to their teams’ between-group victory showed testosterone increases immediately after the competition, but only if this competition was played before the within-group tournament. High-scoring men on losing teams did not show this immediate effect, but they did show a delayed increase in testosterone. In contrast, high-ranking men tended to have lower testosterone and higher cortisol during within-group tournaments. The results are consistent with the hypothesis that men’s competitive testosterone response varies across ingroup and outgroup competitions and is muted during the former. The testosterone response during the between-group competition also suggests that violent multiplayer video games may be appealing to young men because they simulate male–male coalitional competition.
This seems to follow what I have found personally. In first-person-shooters or player-vs.-player competition in MMOs, challenging people I know is more about camaraderie. Against people I don’t know, it is more about survival of the fittest and bragging rights.
What emotional responses have you found when competing in video games?





