Harvard study concludes lefties have more problems, earn less

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“Lefties have more emotional and behavioral problems, have more learning disabilities such as dyslexia, complete less schooling, and work in occupations requiring less cognitive skill,” Goodman said.

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On cognitive skills tests, lefties also do worse. And the evidence that lefties are gifted with greater creativity is “fairly weak,” according to Goodman.

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But by using data sets from the United States and United Kingdom that show handedness, test scores and salaries, Goodman determined that lefties have 10 to 12 percent lower annual earnings than righties.

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