Social introverts, thinking introverts, anxious introverts and restrained introverts all have positive qualities.

How does a psychologist determine from your answers to personality questions whether you are an introvert, extravert, or somewhere in between? (The same question can be asked about other personality ...

See our cover story, “The Upside of Being an Introvert.” See our gallery of the great introverts and extroverts in history. Contact us at [email protected] ...