Introverts, who prefer quieter, lower-stimulation environments, have trouble thriving in today's extrovert-oriented culture, says author Susan Cain. iStockphoto.com hide caption

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Viking
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An illustration shows heretics being tortured and nailed to wooden posts during the first Inquisition. Hulton Archive/Getty Images hide caption

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Braised Pork In Soy Melisa Goh/NPR hide caption

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