Miss M is a hitter and has been for about 8 months now. We have had some great left right combos to the head - and have always said no. Now she is bigger she goes to the corner (we don't call it the naughty corner as she started walking around telling anyone who would listen that she was naughty when really she is a great kid) as she knows what she is doing is not the way to behave. We have always been stern and consistant in our approach to her behaviour and what is acceptable but for some reason she still hits. I guess the good thing is she seems to have grown out of biting and pulling hair! I don't have any answers for you but I guess with age they grow out of it - lets hope!