It's because they talk about shoes

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Women make fewer phone calls than men, but their calls last 16% longer, according to a study of 3,103 mobile-phone customers in Italy and Greece. Guido Friebel of Goethe University in Germany and Paul Seabright of the Toulouse School of Economics in France also looked at call-center employees in Germany and found that calls allocated to women lasted 15% longer than those routed to men;