My 1.5yo does these thing - less and less thankfully.<br><br>
Its helpful to try and see the motive behind them. Mine pinches as a way to get his sibs attention, also in an attempt to tickle them or rub/scratch their back. He pushes usually as his way of saying "back off, you're in my space". and he hits when he's frustrated or over stimulated (like when he's really wound up he'll hit when trying to love on us).<br><br>
I've found its helpful to just keep telling him "Ow! _____ hurts!". If he's doing it to another person I say "oh, no! You just _________ your sister (or whoever)" then address the person and say "dd, that must have really hurt when he __________. Are you ok?" and make sure to comfort them even if they aren't badly hurt. He's getting the idea about good touches and painful ones <img alt="" class="inlineimg" src="http://www.mothering.com/discussions/images/smilies/smile.gif" style="border:0px solid;" title="smile"><br><br>
When he's doing it out of frustration or to get a message across I'll try and give him some words for it. Like " oh, baby. I can see your brother is getting really close to the toys you're playing with and you don't like that. Let's tell him that you'd like some space" and then say what (ideally) he would say if he could.<br><br>
I've used these tactics on kids that weren't mine and had pretty good luck with it.