Bibliography
Carducci's report on shy versus introverted: http://www.shyness.com/documents/1999/SHYENC599.pdf
Adam Grant's abstract report on ambiverts: http://www.philly.com/philly/business/20130412_Study__Extraverts_not_always_best_for_sales_positions.html
Online assessments for ambiverts, introverts, and extroverts:
http://lonerwolf.com/introvert-or-extrovert-test/ - most comprehensive description of results
http://www.thepowerofintroverts.com/quiet-quiz-are-you-an-introvert/
Coping Strategies for Introverts Married to Extraverts is an article from the June 28, 2011 edition of the Wall Street Journal
Image for the Thoughts to contemplate section, courtesy of Stuart Miles can be found at http://www.freedigitalphotos.net