New York Magazine:
It is 2015, which apparently means that everyone — presidential candidates included — will at some point be subjected to this one particular question: Are you an introvert or an extrovert? On Friday, this was part of a “lightning round” in the Democratic candidates forum, hosted by MSNBC’s Rachel Maddow. Hillary Clinton answered by calling herself an “intro-extrovert”: Sometimes she likes being around people, and sometimes she prefers to be alone.
In a 2013 paper in Psychological Science titled “The Ambivert Advantage,” psychologist Adam Grant wrote, “In the world population, levels of extraversion typically follow the shape of a bell curve, with most people falling somewhere in the middle,” suggesting that “most people are ambiverted rather than introverted or extroverted.”
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