Extroverts thrive on social interaction and often find extended periods of solitude to be draining and isolating. They ...

Author Susan Cain, a self-described introvert, accepted an invitation to do what she feared — give a TED talk. Although she was anxious on the big day, she got through it and wowed the audience.

While we all know individuals who are wildly outgoing, plenty of fun to be around and occasionally even obnoxious, chances are we relate less to these extroverts and more to introverts or people ...