Introverts often absorb more input, more intensely. Conversation, noise, eye contact, constant reacting, all of it adds up.

All righty, then. We've enjoyed our little gripefest and that's all well and good. But now it's time to put on a happy face and talk about fun our way. Knowing what we don't enjoy isn't enough. Now we ...

Bill Gates is quiet and bookish, but apparently unfazed by others’ opinions of him: He’s an introvert, but not shy. Barbra Streisand has an outgoing, larger than life personality, but a paralyzing ...