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Mothers who have gone to college, they found, enroll their children in far more organized activities—in large part for the same reasons the best-paid men work so much. These mothers, too, believe that the opportunity cost of not enrolling their children in loads of extracurriculars is too great. It’s the problematic psychology of any arms race: the participants would love not to play, but not playing, in their minds, is the same as falling behind.
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