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

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on the dopam<strong>in</strong>e-driven reward system andits role <strong>in</strong> deliver<strong>in</strong>g life’s goodies. Butthere’s a mirror-image bra<strong>in</strong> network, <strong>of</strong>tencalled the loss avoidance system, whose jobis to call our attention to risk. If the rewardnetwork chases sh<strong>in</strong>y fruit, the loss avoidancesystem worries about bad apples.<strong>The</strong> loss avoidance system, like the rewardnetwork, is a double-edged sword. Itcan make people anxious, unpleasantlyanxious, so anxious that they sit out bullmarkets while everyone else gets rich. Butit also causes them to take fewer stupidrisks. This system is mediated <strong>in</strong> part by aneurotransmitter called seroton<strong>in</strong>—andwhen people are given drugs like Prozac(known as selective seroton<strong>in</strong> reuptake <strong>in</strong>hibitors)that affect the loss avoidance system,they be<strong>com</strong>e more blasé about danger.<strong>The</strong>y also be<strong>com</strong>e more gregarious. <strong>The</strong>sefeatures co<strong>in</strong>cide uncannily, po<strong>in</strong>ts out theneur<strong>of</strong><strong>in</strong>ance expert Dr. Richard Peterson,891/929

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