Introversion is a personality trait in which introverts tend to concentrate on their internal thoughts, feelings, and ideas rather than what is going on around them. Instead of being surrounded by large crowds or groups of people, they prefer spending time with one or two people. Similar to extraversion, introversion is an extensive personality trait that exists on a spectrum of behaviors and attitudes. In general, introverts are quiet, reserved, inhibited, and thoughtful. They tend to guard positive expressions, embrace skeptical views, and often work alone.