Guest: Susan Cain, J.D.

We have been told that the happiest people are the most sociable. Author Susan Cain says that may be why so many introverts hide from themselves. As a personality trait, she says, introversion is seen as something between a disappointment and a pathology. And that is a perception she is out to change. Cain talks with us about her new book Quiet: the Power of Introverts in a World that Can’t Stop Talking.