DS is 17 months and I am pretty sure (I hope) that this behavior is normal. If DS doesn't get his way or I tell him no, sometimes he will look for something to hit (open handed and more like a slap). Sometimes he hits me or an object, then he will look at me...I am struggling with what my reaction (even facial reaction) should be. Is he looking at me afterwards for a reaction? I cant help but giggle sometimes but I wish I could teach him to react in another manner. I try to tell him, "be nice" but he hasn't stopped hitting out of frustration. Will this change with age/development?