" Every dinner, every elbow touch, every impromptu seminar on politics and history adds up to build a relational narrative: You are part of this group. This group is special. I believe you can reach those standards. In other words, Popovich’s yelling works, in part, because it is not just yelling. It is delivered along with a suite of other cues that affirm and strengthen the fabric of the relationships. "

― Daniel Coyle , The Culture Code: The Secrets of Highly Successful Groups