Why is it that the behaviour of teenagers can be so odd? As they grow older, young children steadily improve their sense of how to behave, and then all of a sudden, they can become totally uncommunicative, wildly emotional and completely unpredictable.
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"At moments of extreme exasperation, parents may think that there's something wrong with their teenagers' brains. Which, according to recent books on adolescence, there is.... [Jensen] offers a parenting guide laced with the latest MRI studies.... Packed with charts and statistics." Elizabeth Kolbert, The New Yorker