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

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About 20 percent cried lustily andpumped their arms and legs. Kagancalled this group “high-reactive.” About40 percent stayed quiet and placid,mov<strong>in</strong>g their arms or legs occasionally,but without all the dramatic limbpump<strong>in</strong>g.This group Kagan called“low-reactive.” <strong>The</strong> rema<strong>in</strong><strong>in</strong>g 40 percentfell between these two extremes.In a startl<strong>in</strong>gly counter<strong>in</strong>tuitive hypothesis,Kagan predicted that it was the<strong>in</strong>fants <strong>in</strong> the high-reactive group—thelusty arm-pumpers—who were mostlikely to grow <strong>in</strong>to quiet teenagers.When they were two, four, seven,and eleven years old, many <strong>of</strong> the childrenreturned to Kagan’s lab for followuptest<strong>in</strong>g <strong>of</strong> their reactions to newpeople and events. At the age <strong>of</strong> two,the children met a lady wear<strong>in</strong>g a gasmask and a lab coat, a man dressed <strong>in</strong> aclown costume, and a radio-controlled292/929

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