M.C.
As the mother of 2 boys and a girl, ages 15, 13, and 10, it has been my experience that usually tantrums are a way to get a certain kind of attention. He knows that you respond when he throws a tantrum. My youngest is the "queen of negative attention". Meaning she doesn't feel I give her enough positive, so she uses negative behavior just to get me to pay extra attention to her. I have always found it worked best to ignore her. I would tell her that I would not listen at all until she calmed down, and then I walked away. That wasn't always the easiest thing to do, because she could throw some major fits. If she was really disturbing the others, I would put her in her room until she could calm down and talk to me. She never responded when I took away priveleges, etc. Hope this helps! Good luck and remember, they do grow up and through most behaviors.