Our dd arrived just over two weeks ago, and our ds (2 years 8 mths) has reacted much as expected - regressing a bit, especially with potty trainng which had been going quite well. Most of the behaviour is copable, as I know that he is only doing it because he is unsettled. He is a doting big brother and is always cuddling and kissing his little sister. He is, however, really violent towards our eldest ds (9 years old) - they've always been really close. I guess this is because my youngest ds is worried that our eldest ds prefers our dd, but I really feel sad because it's upsetting our eldest, constantly being told to "go away" and being hit. Our ds is also telling visitors to "Go away" (I've heard him saying "bugger" quite a few times, but he is so obviously doing this for a reaction that I have purposely ignored it). The thing is, one minute he's being really rude to people and pretending to go to hit them, then he snaps out of it and is a gem again, being a real sweetie - he's all over the place! My hv says to ignore the bad behaviour and reward the good, but how can I ignore him beating up his big brother?? Also, took him to preschool today and he sobbed and sobbed and wouldn't be left - have NEVER known this to happen and quite frankly it really freaked me out.