Discover how quickly solitude drains your mental battery and why extroverts recharge faster around other people.

Take this quiz to find out where you fall on the introvert-extrovert spectrum. Answer each question True or False, choosing the answer that applies to you more often than not. 1. I prefer one-on-one ...

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 ...

I spend my summers on Cape Cod, where I go clamming with my friend Woody. I’m what you might call an extrovert and a very, shall we say, enthusiastic clammer. Every time I find a clam, I shout with ...

With summer in full swing, your extroverted best friend is psyched to socialize the night away at your mutual friend’s backyard barbecue. You, on the other hand, are staring at the clock. (And I don’t ...

See our cover story, “The Upside of Being an Introvert.” See our gallery of the great introverts and extroverts in history. Contact us at letters@time.com ...