Surrounding effects of a child's violent behavior

It has been argued that a child's violent behavior is caused by aggression by outside influences, such as peers, television and even their own family environment. Yet it is common knowledge that forms of violent behavior must come from somewhere. It is thought that there must be a reason for this behavior and that something or someone instigated it somewhere along a child's life. This raised the question, are there predictors for violent behavior in …

…whether or not their parents ask where they are going and who they are with and if their parents make them come home at a certain time at night. Lastly, children were questioned on the amount of television they watch per day, their favorite show (topics included "shows that are funny," "shows about kids and their families," "shows about imaginary places," "shows that talk about news and current events," and "shows that feature music videos."