My rating: 3 of 5 stars
Well-researched, well-written and highly relevant in a culture that promotes the extrovert ideal. But perhaps a little simplistic in presupposing that the only critical personality trait is extroversion. MBTI theorists would argue that qualities such as propensity for conflict does not depend on extroversion, but whether one is Thinking or Feeling. Four Temperament theorists would argue that whether one is focussed and passionate or whether one is laidback and chill depends on whether one is Melancholic or Phlegmatic.
The book also fails to distinguish between different types of introverts. There are sensitive ones acutely aware of others’ emotions. There are also those oblivious to feelings. Some are neurotic and worrisome; some are cheerful and easily happy. Some are structured and neat; some are spontaneous and disorganized.
I wonder if the book pushes too far against the extrovert ideal by proposing its own introvert ideal.