the 1960s, psychologist Carl Jung first described introverts and extraverts when discussing personality elements. (The term now commonly used is extroverts.) He classified these two groups based on where they found their source of energy. In short, Jung argued extroverts are energized by crowds and interaction with the external world. Introverts need alone time to recharge, and they’re often more reserved in their manners and engagement with others.
ในปี 1960 นักจิตวิทยา ชื่อ Carl Jung อธิบายบุคคลิกส่วนตัวคนไว้ 2 แบบ