This pent up anger from lack of love and nurturing can manifest itself in mean, hateful, hurtful and retaliative violent behavior. You may think that the aggressive child runs the risk of being rejected by his peer group, becoming an outcast. Rejection by all peers is not always the case. Many aggressive children have a network of friends who are similar to themselves. Although these clusters may encourage and perpetuate antisocial behavior, they also appear to provide friendships and social support.
Aggression begets aggression.
It's important to realize that treating a child aggressively for aggression, doesn't stop it. Children end up playing out aggression received from parents and older siblings in their relationships with peers. Even if parents thwart their child's aggressive behavior with firm yet not harsh control, neighborhoods, schools, and the media provide aggressive environments where children witness aggression and violence in a variety of forms daily. Aggressive scripts become imbedded into a child's psyche. It's in the culture.