http://www.quietlyfabulous.com/2011/01/06/introverts-arent-a-minority/ http://www.quietlyfabulous.com/2011/01/06/introverts-arent-a... Here's the cliff notes:

http://www.quietlyfabulous.com/2011/01/06/introverts-arent-a-minority/ http://www.quietlyfabulous.com/2011/01/06/introverts-arent-a... Here's the cliff notes: “But in 1998, researchers were finally able to do what Isabel Briggs Myers could not: an actual population study. The study was based on a national representative sample – 3,009 randomly selected individuals – which, through weighting of underrepresented groups, was made to approximate the distribution of the 1990 U.S. Census. The findings were clear: introverts and extroverts are equally represented in the population.” (emphasis in original)