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Quiet: The Power of Introverts in a World That Can ... - WordPress.com

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I’ve been puzzl<strong>in</strong>g over these questionsfor my entire adult life. Fortunately,so have researchers at Harvard,where scientists are prob<strong>in</strong>g thehuman bra<strong>in</strong> <strong>in</strong> an attempt to discoverthe biological orig<strong>in</strong>s <strong>of</strong> humantemperament.One such scientist is an eighty-twoyear-oldman named Jerome Kagan,one <strong>of</strong> the great developmental psychologists<strong>of</strong> the twentieth century. Kagandevoted his career to study<strong>in</strong>g the emotionaland cognitive development <strong>of</strong>children. In a series <strong>of</strong> groundbreak<strong>in</strong>glongitud<strong>in</strong>al studies, he followed childrenfrom <strong>in</strong>fancy through adolescence,document<strong>in</strong>g their physiologies andpersonalities along the way. Longitud<strong>in</strong>alstudies like these are time-consum<strong>in</strong>g,expensive, and therefore rare—butwhen they pay <strong>of</strong>f, as Kagan’s did, theypay <strong>of</strong>f big.290/929

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