What’s the difference between being introverted and being shy? What are extroverts so cheerful about? And does Angela’s social battery ever run out?

Take the Big Five inventory: freakonomics.com/bigfive

• SOURCES:
  • Susan Cain, author.
  • Will Fleeson, professor of psychology at Wake Forest University.
  • Sigmund Freud, neurologist and founder of psychoanalysis.
  • Adam Grant, professor of management and psychology at the University of Pennsylvania.
  • Carl Jung, psychiatrist and psychoanalyst.
  • Donald Kamentz, founder and C.E.O. of Contigo Ed.
  • Sonja Lyubomirsky, professor of psychology at the University of California, Riverside.
  • Seth Margolis, professor of biological chemistry at Johns Hopkins University.

• RESOURCES:
  • "A Crucial Character Trait for Happiness," by Arthur C. Brooks (The Atlantic, 2023).
  • "Experimental Manipulation of Extraverted and Introverted Behavior and Its Effects on Well-Being," by Seth Margolis and Sonja Lyubomirsky (Journal of Experimental Psychology: General, 2020).
  • "Challenges to Capture the Big Five Personality Traits in Non-WEIRD Populations," by Rachid Laajaj, Karen Macours, Daniel Alejandro Pinzon Hernandez, Omar Arias, Samuel D. Gosling, Jeff Potter, Marta Rubio-Codina, and Renos Vakis (Science Advances, 2019).
  • "Rethinking the Extraverted Sales Ideal: The Ambivert Advantage," by Adam Grant (Psychological Science, 2013).
  • "The Power of Introverts," by Susan Cain (TED Talk, 2012).
  • Quiet: The Power of Introverts in a World That Can't Stop Talking, by Susan Cain (2012).
  • "Personality Trait Change in Adulthood," by Brent W. Roberts Daniel Mroczek (Current Directions in Psychological Science, 2008).
  • "Toward a Structure- and Process-Integrated View of Personality: Traits as Density Distributions of States," by William Fleeson (Journal of Personality and Social Psychology, 2001).

• EXTRAS:
  • Big Five Personality Inventory, by No Stupid Questions (2024).
  • “Personality: The Big Five,” series by No Stupid Questions (2024).