My son often has hitting behaviors when he is over stimulated, frustrated or upset. His ABA behavioralist mentioned that I could try starting at home when those behaviors happen and to hold my hands out with palms open and redirect the hitting. She said that it reminded her of Mr. Miyagi. I will say that it is a longer process this way and it requires consistency and follow through. Personally it took me sometime to get use to it but she mentioned it overall helped reinforce the idea that hitting behaviors aren't going to give them the response they are looking for. Likewise she mentioned that role modeling and play might affect it. so she suggested during games like playing catch or activities that involve more physical activity were great moments to remind your child that personal boundaries are important. Ex. "Hey remember to throw the ball only when I'm ready to catch it. Only throw the ball if my hands are up." This was I think the most effective for my son as it taught him a couple good skills at the same time. That being said I would take it with a grain of salt since my son is going to be 3 in May; so other tools and techniques might be more effective for older kids.

My son also hits. Usually when something upsets him. I urge you to monitor the behavior. Maybe keep a journal so you can notice a pattern. Most kids with ASD can't correctly express their feelings so they lash out with hitting, biting, scratching, etc. It has taken me a few years to determine why my son hits or pushes.

When he was 3-5 he would push down his younger sister all the time. Often without any real reason. At least that's how it appeared to us. Hang in there!