I think Dr. Haier's judgement of when people get frustrated with people being less intelligent than them is wrong. Any intelligent individual is more likely to see the outcome of a harsh interaction to result in a negative outcome and in turn then try to make the interaction positive. Those that create  negative interactions are not as intelligent. In my personal and estimated opinion.,(reply>), That is a factor of personality, not intelligence. An intelligent individual may see this interaction being negative and simply not care. You can be intelligent and be an a**, just as much as a person who is not intelligent.