I have a 6 year old girl with a very strong and assertive personality. She is one of those kids that is always trying to push the limits to see what she can get away with. She plays a lot with other girls. Sometimes, they argue. I don't consider it odd. Sometimes, she will try to cheat at a game to see what happens, and when she gets mad, she might say "If you don't stop/start, then I won't be your friend anymore."
In my mind, while these behaviors are not pleasant, it's my understanding that they are age-appropriate. I see the other girls doing it too. My approach to this is to watch, but not intervene unless someone comes crying. Even then, I ask the kids to try and figure out how they are going to work it out.
Do you think I'm off base in my interpretation of age-appropriate behaviors? How do you handle these kinds of behaviors? If you are a parent of a child who doesn't interact this way, how do you feel when your child is around girls who do behave like this?