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C in Other
How can I get my three year old to stop being mean to his sister and telling us no on everything?
My three year old son is being so mean to his one year old sister, and I don't know how to stop it. He is also telling us no on everything. Like everything. He also tells his teachers no and to leave him alone and don't talk to me. He is saying that to us, too. We can't get him to stop at all. I know he is only 3, b...