Thank you, Steve, for your very thoughtful comment. I don't believe there is one right answer regarding discrete emotions. Without the context the emotional responses reside in or in what venue they are exhibited, it's impossible to know the affect on a leader. If an employees is injured or has a tragedy, I would expect a leader to exhibit sadness, etc.  However, as with all employees, if someone in a leadership role loses emotional control, they give away their power and run the risk of losing credibility.

As goes the leader, thereby goes the organization. Leaders bear a big responsibility in demonstrating confidence, optimism and stability.