Sounds like their has been a lack of spanking. I've seen other mothers try and say that "hitting" the child just teaches him its ok...YEAH, if you hit him in the same manner as he hits others. But spanking him on the butt or hand it always racked up to a spanking and punishment to kids. I could see if u bit ur own child for biting...sure thats encouraging. But spanking is another form of punishment, just alot more effective b/c it has contact and with kids today that know about sex before puberty,spanking is highly needed,to the point and the lack of it is causing alot of mean kids to sprout.I leave the success of my 4 yr old not having a mean bone in his body to my genes and spanking. In a group out of 10 kids,mine being 1 of them..9 out of those 10 would get in trouble for hitting,lack of sharing or just being mean...while my child is always happy to share and knows whats coming if he does do those bad things. Their old enough to understand why ur spanking...give it a try and see if it helps you. To me hearing that a child hit another child let alone an ADULT...is hard to understand. If my child ever..for any reason hit an adult...well lets just say that would be the last time that hitting anyone ever crosses his mind....the same way I cured cussing when he said his very first and last curse word. And with family who cuss pretty often in conversations to each other that is hard to teach but he has never tried to test that. Liten,if u saw a grown child hitting an adult..ur first reaction is why isnt someone kicking his butt. It is the same with a small child...in no way is a child suppose to be allowed to hit an adult.You need to nip it while u have time to change that behavior, if u don't he will be doing the same thing as an adult but will cause more damage.