As noted above, violent content within violent video games has
also been identified to increase levels of aggression. Within specific
violent video games, progression through gaming levels achieved
by engaging in violence poses an additional risk of increasing levels
of aggression. Carnagey and Anderson [25] found that rewarding
violence increased in-game violence and that rewards for killing
other racing drivers and pedestrians, in the race-car video game
Carmageddon 2, increased levels of hostile emotion, aggressive
thinking and aggressive behaviour. Sherry [26] identified that
video games that portray human violence were associated with
increases in levels of aggression, potentially due to higher rates of
action, and subsequent heightened nonspecific arousal. More
specifically, increases in experience of perceived difficulty,
enjoyment and action have yielded significant game effects on
aggressive thoughts [27]. These findings lend support to the
processes involved in the GAM