Dear Stephanie,
Your son's behavior is probably not due to a desire to get a rise out of children or gain attention. I say this because the behavior is aggressive in
natureNature-throid
Natures tears and is an expression of his
angerIslets of langerhans
Ovarian cancer dangers
Pancreatic islet cell tumor.
You are on the right track. At any sign of aggression, place your son in time out, with the simple words: "No hurting." Use a portable timer to track the time, start the timer only when your son is seated and quiet, and keep him in the time out for five minutes. At the conclusion, repeat the words: "No hurting."
Over time, if you are persistent, you will see this behavior diminish.
Also, be on the lookout for the kinds of situations that result in his being angry. Careful observation will reveal this to you. Then you can intervent to help him handle such situations without the aggressive behavior.