[dampflames]

I don't think there is a correlation between them. Rather, I think that if there are two people who have the same level of intelligence, the one who is a better communicator (and this is more often a trait found in extroverts) comes across as smarter because they can transmit their ideas better.

[001sky]

Contrary view, based on research:

http://www.reuters.com/article/2014/03/10/us-usa-investment-...

http://phys.org/news/2014-03-investors-good-looking-male-ent...