Its really interesting reading the responses here, DD has started acting out and has been demonstrating rough play with me and the baby but I figured this is her way of processing feelings she doesn't understand - jealousy, resentment etc.

I guess I grew up with parents who did the 1-2-3magic type style of parenting ...... and from MY experience as the "naughty child" it was completely ineffective. I copped so many wooden spoons broken over me that it wasn't funny. If your going to teach a child consequences to actions it needs to be done immediately not 2 warnings then strike. Sorry for the reference but you don't say to a naughty puppy 1-2-3NO, there is the "naughty" behaviour then correction straight away.

You can be firm and still be kind about it but whatever you choose to do it needs to be consistant. Good Luck hun I hope you find the right method for you.