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Brains of kidney donors seem built for generosity
Brains of kidney donors seem built for generosity

As if giving a perfectly good kidney to a total stranger wasn’t enough of a distinction, it turns out that extreme altruists have bigger brains and are better than the rest of us at reading signs of distress in facial expressions. That’s what neuroscientists at Georgetown University found when they rounded up 39 kidney donors and scanned their brains, according to a study published online Monday in the journal Proceedings of the National Academy of Sciences. Psychologist Abigail Marsh thought it would be tough to round up a significant number of people who had donated kidneys to strangers. She was pleasantly surprised. They were easy to find because many now advocate for...

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