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双语研究:左撇子更容易遭遇心理障碍(图)
作者:佚名  文章来源:转载  点击数  更新时间:12/7/2011 11:38:35 PM  文章录入:阚金玲  责任编辑:阚金玲

e womb, may play a leading role:

  Babies born to older mothers or at a lower birth weight are more likely to be lefties, for example. And mothers who were exposed to unusually high levels of stress during pregnancy are more likely to give birth to a left-handed child. A review of research, published in 2009 in the journal Neuropsychologia, estimated that about 25% of the variability in handedness is due to genetics.

  People .monly say that left-handed people operate with the right side of their brain, while right-handed people use the left side. And to some extent, that's not only proving to be true, but may also explain why lefties are slightly more prone to psychological disorders:

  Some 70% of lefties rely on the left hemisphere for their language centers, a key brain function, says Metten Somers, a psychiatrist and researcher who studies brain lateralization at Utrecht University Medical Center i

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