A child that is especially defiant may be behaving this way to counteract dependency and fears of loss. A child who feels hurt by a loss may become angry as a way to avoid feeling sad and powerless. Sometimes a child's anger prompts an adult to set rules more clearly, explain matters more thoroughly, or make changes in the child's environment. In other words, a child may have learned that anger is an all-purpose red flag to let others know that something is very wrong. It is important to remember that anger is not the same thing as aggression.
Anger is a feeling, while aggression is a class of behaviors.
Explain that anger is OK, aggression is not Dealing with a child's anger requires first finding out what they feel. Ask them what's happened, what went wrong, or why they are feeling what they feel. They may be able to tell you very clearly. On the other hand, they may need your help to label their feelings. A parent might respond to a child who hits his brother by asking why he hit him.