They're much more relaxed than the people lower down on the dominance hierarchy.

WSJ: Goal! But Why No Celebration Backflip?

You should know your place in the dominance hierarchy.

WSJ: Diva Behavior and Narcissism: Healthy or Unhealthy?

It is known, though, from experiments on other species that if those at the bottom of a dominance hierarchy show signs of getting uppity, those at the top react both quickly and aggressively.

ECONOMIST: The psychology of power

He says that humans can learn from monkeys "when power works, when hierarchy works - and when dominance is not effective".

BBC: Animal behaviour in the boardroom