Le message du sac à main: Two researchers offer evidence that women, consciously or not, use expensive items as a back-away signal to romantic rivals.

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MARGARET WENTE Everyone knows the girls are clobbering the boys in school. They get higher marks and graduate at higher rates. Women have stormed the gates of medicine and law. They’ve all but taken over pharmacy and veterinary work. They are focused, purposeful and diligent. Their brothers, meanwhile, are in the basement playing video games.