I was interested in the statistic that 75% of HG were introverted. And since this study looked at professions that attracted the extroverted, what was it showing? That highly intelligent, extroverted people climb the ladder of their choosing?

Just an aside, on the introverted, brilliant: a couple -- he the head, she heads one team under him -- parents from DD's class, have success curing childhood leukemia. And they are very nice people. None of those CEO personality disorders. It was in the NY Times a few weeks ago. Contribution to the world from the HG introverted.