There's more than one meaning of "introversion".

Do you ever get annoyed when people tar all introverts with the same brush? Or do you think you're an introvert, but personality tests say you're not? This quiz will help you figure out where you stand.

Professor Jonathan Cheek, a personality psychologist at Wellesley College, and his colleagues have come up with a new model of introversion. They call it the STAR model, after the four different meanings within it: Social, Thinking, Anxious, and Restrained Introversion. The model covers all of the things people usually talk about when they talk about introversion – needing alone time to recharge, feeling uncomfortable around too many people – but goes beyond that to some less well-known meanings, and acknowledges that not all introverts are the same.

Cheek and his colleagues designed this questionnaire to determine which meaning of introversion fits you best. There are 40 questions, but answer honestly and stick with it. You might learn something new about yourself.