Normal Or Bad Behavior
Children’s behavior is sometimes complicated. They have many influences that shape that behavior. Family, peers, school, television and friends they may model themselves after. When a child or adolescent shows signs of negative or emotional behavior it is important to decide if it is just normal childhood behaviors or something much deeper .
It is possible they may be experiencing depression or some other anxiety disorder.
http://hubpages.com/hub/Signs-And-Symptoms-Of-Childhood-Depression