Do you enjoy having time to yourself, but always feel a little guilty about it? Then Susan Cain’s “Quiet : The Power of Introverts” is for you. It’s part book, part manifesto. We live in a nation that values its extroverts – the outgoing, the lovers of crowds – but not the quiet types who change the world. She recently answered questions from Mind Matters editor Gareth Cook.

Cook: This may be a stupid question, but how do you define an introvert? How can somebody tell whether they are truly introverted or extroverted? 

Cain: Not a stupid question at all! Introverts prefer quiet, minimally stimulating environments, while extroverts need higher levels of stimulation to feel their best. Stimulation comes in all forms – social stimulation, but also lights, noise, and so on. Introverts even salivate more than extroverts do if you place a drop of lemon juice on their tongues! So an introvert is more likely to enjoy a quiet glass of wine with a close friend than a loud, raucous party full of strangers.

It’s also important to understand that introversion is different from shyness. Shyness is the fear of negative judgment, while introversion is simply the preference for less stimulation. Shyness is inherently uncomfortable; introversion is not. The traits do overlap, though psychologists debate to what degree.

Cook: You argue that our culture has an extroversion bias. Can you explain what you mean?

Cain: In our society, the ideal self is bold, gregarious, and comfortable in the spotlight. We like to think that we value individuality, but mostly we admire the type of individual who’s comfortable “putting himself out there.” Our schools, workplaces, and religious institutions are designed for extroverts. Introverts are to extroverts what American women were to men in the 1950s -- second-class citizens with gigantic amounts of untapped talent.

In my book, I travel the country – from a Tony Robbins seminar to Harvard Business School to Rick Warren’s powerful Saddleback Church – shining a light on the bias against introversion. One of the most poignant moments was when an evangelical pastor I met at Saddleback confided his shame that “God is not pleased” with him because he likes spending time alone.

Cook: How does this cultural inclination affect introverts?

Cain: Many introverts feel there’s something wrong with them, and try to pass as extroverts. But whenever you try to pass as something you’re not, you lose a part of yourself along the way. You especially lose a sense of how to spend your time. Introverts are constantly going to parties and such when they’d really prefer to be home reading, studying, inventing, meditating, designing, thinking, cooking…or any number of other quiet and worthwhile activities.

According to the latest research, one third to one half of us are introverts – that’s one out of every two or three people you know. But you’d never guess that, right? That’s because introverts learn from an early age to act like pretend-extroverts.

Cook: Is this just a problem for introverts, or do you feel it hurts the country as a whole?

Cain: It’s never a good idea to organize society in a way that depletes the energy of half the population. We discovered this with women decades ago, and now it’s time to realize it with introverts.

This also leads to a lot of wrongheaded notions that affect introverts and extroverts alike. Here’s just one example: Most schools and workplaces now organize workers and students into groups, believing that creativity and productivity comes from a gregarious place. This is nonsense, of course. From Darwin to Picasso to Dr. Seuss, our greatest thinkers have often worked in solitude, and in my book I examine lots of research on the pitfalls of groupwork. 

Reprints and Permissions »