I am an introvert, and when I first heard a little about this book, I was excited to read it. And it did not disappoint.Cain talks about her own introversion, and how it has affected her for both good and ill, but does so in the context of speaking about a range of research finding about the personality trait. She discussed psychology, biology, sociology, and anthropology. All of these fields of study have something to say about the topic of her book. Her thesis is that modern America is an extrovert-focused society, where the best sales pitch is rewarded, and the most risk-taking behavior is respected. Cain points out that this is not a trait that is equally respected across cultures, as the "quiet brilliance" of introverts is more likely to be recognized and revered in Asian cultures.
Cain's point is that both introversion and extroversion have their own strengths and weaknesses, and that a strong society will make place for both personality types.
I found so much to hold on to in reading this book, and expect to revisit some of the chapters again in the near future.