I have 2 Dc's eldest is a boy of 9 and a girl if 7. They have lovely moments where they can play nicely together but it is short lived and I can't seem to leave them unsupervised as arguments seem to start very suddenly and they are both very keen to hurt one another when they fall out. I have a younger brother and can honestly say that I never remember fighting so this is making me so sad. I have recently stopped all ipad and wi use as a form of punishment but it seems to have no effect. Stupidly left them tonight in same room playing board with neighbours child. Suddenly I realised that there was a commotion and ds was stood over his sister and ramming his fist into her chest. I grabbed him off and sent him to his room but I just feel so sad why they would want to behave like this. They are never aggressive to other children. I have told them that if behaviour improves they can have limited ipad use as a reward but would love to know any other suggestions please.