[Crimson Dynamo]

Using such general models, media violence scholars now have a clear picture
of how media violence increases aggression in short and long term contexts.
Immediately after exposure to media violence, there is an increase in
aggressive behavior tendencies because of several factors. 1. Aggressive
thoughts increase, which in turn increase the likelihood that a mild or
ambiguous provocation will be interpreted in a hostile fashion. 2. Aggressive
affect increases. 3. General arousal (e.g., heart rate) increases, which tends
to increase the dominant behavioral tendency. 4. Direct imitation of recently
observed aggressive behaviors sometimes occurs.


Repeated media violence exposure increases aggression across the lifespan
because of several related factors. 1. It creates more positive attitudes,
beliefs, and expectations regarding use of aggressive solutions. 2. It creates
aggressive behavioral scripts and makes them more cognitively accessible. 3.
It decreases the accessibility of nonviolent scripts. 4. It decreases the
normal negative emotional reactions to conflict, aggression, and violence.


https://www.apa.org/science/about/psa/2003/10/anderson