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rofessor Buchman said "Those who play violent games on a regular basis. May become visible if the world is a place full of hostility and violence. The study indicates a cumulative effect. The anticipation of the enemy is not the only reason to play more aggressive. But research shows that this is certainly an important factor. We found that after playing a violent game. The player is expected that others will behave aggressively. This expectation may cause them to build up defenses. And respond with aggression itself.