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When Barack Obama entered the Capitol on Inauguration Day to enact his first piece of legislation, he let his liberal mind guide his body as he signed his name."That's right. I'm a lefty. Get used to it," the southpaw president joked at the time.
For nearly all right-handers, language abilities reside exclusively on one side of the brain -- usually the left, which controls the right hand. But one in seven lefties process language on both sides of the brain, possibly because using their left hands during childhood stimulated the development of the right half. So Reagan, Bill Clinton and Obama may have left-handedness to thank for their legendary speaking abilities.
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