My elder one is always bullying his sister, how can I improve the situation?

Here are two articles which I found with great suggestions on how to handle sibling bullying. http://www.stompoutbullying.org/index.php/news/sibling-bullying-damaging/ http://nobullying.com/sibling-bullying/ The few suggestions which I thought would be good to consider are: - treating both your children as fairly and as equally as possible (to help minimize jealousy) - holding your son responsible for his actions -getting your son to learn to empathize. Ask him to consider how he thinks he will feel if he is in your daughter's shoes - reinforcing positive behaviour. Despite the bullying, there are instances where your son will be showing affection for his little sister. Reinforce those behaviour by highlighting and praising him for doing so - talk to your son and find out what is the underlying issue that has brought on the bullying behaviour towards his sister