Why Your Boss May Start Sweating The Small Stuff -- Mar. 20, 2006
TIME Magazine Archive Article -- Why Your Boss May Start Sweating The Small Stuff -- Mar. 20, 2006: New sensitivity training at the office focuses on all the little ways a tone-deaf manager can demoralize a staff
I think much of this goes back to general politeness and good manners. Even the Golden Rule: do to others as you'd have them do to you.
Not being able to manage interruptions effectively - especially when you're having an important meeting with someone, IS demoralizing.