Barbara Fredrickson, Boston Universitys 2009-2010 Templeton Fellow, is the Kenan Distinguished Professor of Psychology at the University of North Carolina, Chapel Hill. Author of the book Positivity, she delivers a lecture titled The Dynamics of Positive Opposites, one of the final three lectures in the public component of the Danielsen Institutes Religious and Psychological Well-being Project, discussing how positive and negative emotions are often linked or connected.