Exhibiting Energy, Passion, and Drive
In the corporate environment, extroversion is valued - a person who is reticent, introverted, timid, and unapproachable is seen as lacking passion for their work and their company, regardless of whether they have it or not.
Moreover, introverted people are seen as disinterested by their peers, and tend to be pigeonholed as heads-down workers and not to be promoted to positions of responsibility.
He doesn't provide much useful information, but mentions a sports metaphor: how a player who draws a walk, sets down his bat, and strolls to first base is seen as being less of a team player than someone who tosses the bat aside and jogs there. While they are doing the same thing, the latter shows more drive, more excitement to be in the game.
He also speaks of televangelists: flipping channels between a stoic preacher and a fire-and-brimstone charismatic. Which congregation was more engaged? Which church drew the larger crowd? EN: I'm not sure this is the best example to use, but he does have a point about the enthusaism of a speaker creating ethusiasm in his audience
He also speaks of physicality - the way that certain ethnic groups (Italians in particular) are perceived as being more "passionate" people because of their use of gestures and the physical energy they demonstrate while engaging in conversation.