Psychology Quiz: Are You an Introvert or an Extrovert? By Susan CainJan. 27, 20120 Share Read Later <a href="http://timedotcom.polldaddy.com/s/introvert-extrovert-test">View Survey</a> See our cover story, “The Upside of Being an Introvert.” See our gallery of the great introverts and extroverts in history.
