psychology of aggression

• aversive events 


  aversive events can bring out the worst in people - when we become frustrated with a situation, we can act more aggressively than we would intend to
• frustration-aggression principle 


  principle that frustration (the blocking of an attempt to achieve some goal) creates anger, which can generate aggression
• social-cultural influences 


  different cultures encourage and accept different levels of aggression in various situations