Having that sense of anger leads people to actually feel some power in what otherwise is a maddening situation.

Here getting emotional is not bad for you if you look at the case of anger. The more they are displaying anger, the lower the stress responses.

Anger can sometimes be adaptive. We're showing for the first time that when you are in a situation that is maddening and in which anger or indignation are justifiable responses, anger is not bad for you.

Anger triggers a sense of certainty as well as a sense of control.

Angry people are actually not just more optimistic than fearful people, they're optimistic in an absolute sense, that is they are as optimistic as happy people and that was surprising to us.

One individual impacted that company's decision and I don't think in general people understand the power they have.