Ezra, 18 months David's senior, often traveled with his brother, but a more introverted personality led him to play a less public role.

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Likes for "beerpong, " "Chris Tucker" and "cheerleading" were strong predictors of an extrovert while "role playing games, " "Anime" and "Voltaire" pointed to introverted personality types.

CNN: Heather Kelly,

Such was Sampras' supremacy over his rivals that he rarely received due credit for his achievements and faced persistent accusations that his introverted personality made him dull to watch.

BBC: Sampras' legacy already in place

It wasn't so long ago that we were supposed to develop our workplace "EQ"--that's Emotional Intelligence--and before that, to remember our Myers-Briggs personality type. (Now was it "ExtrovertedIntuitive FeelingPerceiver" or "Introverted Sensing Thinking Judger"?) Corporate America, it seems, has an unappeasable hunger for the newest, hottest management concepts--all of which, on closer examination, appear eerily similar.

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