Though introverts are drained by interaction, we can take immense pleasure in watching the scene around us.

Reading is like travel, allowing you to exit your own life for a bit, and to come back with a renewed, even inspired, perspective.

Extroverts are more attuned to social rewards, so they are more likely to flash a smile for effect. A notable exception are introverts - like me - whom I call "socially accessible" introverts. We have been trained well to smile and nod, which can place a burden on our processing efforts.

Extroverts want us to have fun, because they assume we want what they want. And sometimes we do. But "fun" itself is a "bright" word, the kind of word that comes with flashing lights and an exclamation point! One of Merriam-Webster's definitions of "fun" is "violent or excited activity or argument." The very word makes me want to sit in a dimly lit room with lots of pillows-by myself.

Introvert conversations are like jazz. Each player gets to solo for a nice stretch before the other player comes in and does his solo.

Some findings reveal extroverts as more adept at reading nonverbal cues, and attribute this to the extrovert's greater interest and experience with social interactions. Another line of research using subliminal images of facial emotion found introverts to be more sensitive to the differences, and hypothesized that this may be why introverts regulate the amount of incoming social information.

America is a noisy culture, unlike, say, Finland, which values silence. Individualism, dominant in the U.S. and Germany, promotes the direct, fast-paced style of communication associated with extraversion. Collectivistic societies, such as those in East Asia, value privacy and restraint, qualities more characteristic of introverts.