What you speak of is the constant battle between the rational and emotional parts of our brain . You speak of the "child" in the 3rd. person . Why ? It's a part of you. I don't think we can overcome emotions with logic. I know that may not sound right but really think about it. The adult is trying to speak with a child that hasn't even learned a language yet. There shouldn't even be a back and forth. Logic has to decipher the emotion and then deal with it properly. This is a very big complicated issue .
Mankind has a long way to go in terms of understanding the psychology and physiology behind the " adult" and " child " in the room. To be continued....