How Introverts and Extroverts Are Different

by Laura Donovan

''Introverts and extroverts don't always understand each other. But science has revealed physiological differences between the two that help explain their differences in behavior and shed light on our misconceptions about them both.

An extroverted brain's dopamine reward system responds more actively than an introverted brain's to rewards such as money, sex, social status, and social affiliation, according to Scott Barry Kaufman, a psychologist and the scientific director of the Imagination Institute, in a recent video interview for introvert site Quiet Revolution. (Dopamine is a neurotransmitter that helps regulate rewards and pleasures in the brain.) This may explain why an extrovert shows more excitement in a social setting than an introvert...''