Not Unisex Sex roles are less rigid worldwide: College men have close male friends and college women play basketball. Noticing such changes makes it harder to see gender differences that remain. Imagine eight women playing pick-up basketball, as these Maryland men do, or four men sharing a secret as these Jordanian women do.
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JODI COBB/NATIONAL GEOGRAPHIC/GETTY IMAGES
JODI COBB/NATIONAL GEOGRAPHIC/GETTY IMAGES