Oh my god, how great it is to hear you all talk about sibling rivalry! (Well, on one level not so great I suppose but on the other ahdn great because I have people I can relate to!!!) This is normal then? I read somewhere that according to one survey 40% of parents experience sibling rivalry.
I have 2 children -dds (1 is 2 3/4 and the other 10 months.) My eldest goes from being super nice to sitting on top of the youngest, pushing her over, putting a finger in her eye when she is sleeping and we are out in the twin buggy.
I myself respond in a very inconsistent manner due to turmoil inside where, on the one hand, I want to totally explode and respond on a very protective level for the wee one, and on the other I recall the advice in the books: be calm, ignore behaviour, be firms, distract child, place away from situation.... and therefore go from being very calm and patient to hearing a very intense and loud voice screaming, 'No! We do not do that!' I have no idea where it comes from since I recall having been calm for at least 2 hours and then realise that I am not calm at all!
I explain carefully to eldest why we do not do these things to people and place her away from the situation where she screams and cries and is very apologetic only to return and repeat the incident again about 10 mins later. Then I feel myself getting a little irritated and then a little more annoyed and then very cross indeed.
Every day there are occurrences. Some days are better than others. It doesn't seem to go away totally, but I did read some very useful advice: If you don't want sibling rivalry, don't have another baby. Hmmmm...are we bound to this behaviour in one way or another for ever? Perhaps we should be disucssing ways in which we can cope within ourselves when this happens, since we appear to be applying the correct techniques.
I suggest that after the 4th time of explaining or time out we then depart from the room and apply some technique that will allow us to calm before the storm.