Quiet: The Power of Introverts in a World That Can't Stop Talking

by Susan Cain

In most settings, people use small talk as a way of relaxing into a new relationship, and only once they’re comfortable do they connect more seriously. Sensitive people seem to do the reverse. They “enjoy small talk only after they’ve gone deep,” says Strickland. “When sensitive people are in environments that nurture their authenticity, they laugh and chitchat just as much as anyone else.”

In fact, some scientists are starting to explore the idea that reward-sensitivity is not only an interesting feature of extroversion; it is what makes an extrovert an extrovert. Extroverts, in other words, are characterized by their tendency to seek rewards, from top dog status to sexual highs to cold cash.

But the more interesting aspect of this puzzling behavior is not what the extroverts do before they’ve hit the wrong button, but what they do after. When introverts hit the number nine button and find they’ve lost a point, they slow down before moving on to the next number, as if to reflect on what went wrong. But extroverts not only fail to slow down, they actually speed up.

Introverts, in contrast, are constitutionally programmed to downplay reward—to kill their buzz, you might say—and scan for problems. “As soon as they get excited,” says Newman, “they’ll put the brakes on and think about peripheral issues that may be more important. Introverts seem to be specifically wired or trained so when they catch themselves getting excited and focused on a goal, their vigilance increases.”