Gender roles are one reason for this. Boys are encouraged to take part in more aggressive activities than girls are. Role models are also an important factor in aggression. Studies show children imitate the behaviors of their adult models. The media and television are two controversial factors in aggression.
Television is loaded with violence and broadcasts it to children around the world.
Children imitate what they see, be it at home, in school, or on television. Conflicts, disagreements over social issues, beliefs, or behaviors, and frustration resulting from blocked goals can also lead to aggression. Communication alone does not help resolve a conflict, and may even escalate it. It must be used in conjunction with other methods of dealing with conflict and aggression. Finding more positive ways of venting frustration such as sports can help.