The book draws on scholarly research but instead of being a dry presentation of those results, the author describes events and interviews with a variety of researchers, extroverts, introverts, and introverted pseudo-extroverts.
Speaking of this review, why am I writing it?
We introverts apparently share a lot of qualities other than just recharging our batteries alone rather than at parties. We can be more sensitive inwardly but also more sensitive to the social cues around us. We "read" the social enviornment more keenly than extroverts, who basically just get high when they're in their element. Could this mean we are attuned to the "tells" of the adults around us as children? Were we the first to suspect that Santa Claus wasn't real, and could we tell that the priest/pastor/rabbi/imam didn't really believe every word they said? Could our in-touchness put us more in the real world than our in-headness would suggest? Or do we doubt more because we're just immune to religious group think because we're immune to all kinds of group think?
Wall Street bankers demonstrated the difference between extroverts and introverts quite dramatically: the extroverts made stupid decisions when they saw the market starting to implode while introverts made more cautious, wiser decisions. It wasn't so much that introverts are averse to risk (or else why would they be investment bankers in the first place?) but that extroverts get high on adventure, which isn't always a good thing. Of course, it's not always a good thing not to go for adventure.
*the author intentionally used the common "extrovert" spelling rather than the "correct" spelling, "extravert" so I did the same.