Left-handedness

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he result of Thomas Naglaki's theory.
To confuse the issue even more, another factor has been thrown into the argument. Some left-handers write with their pencil facing the bottom of the page, in a "hooked" position. This is called inverted writing. Jerre Levy and MaryLou Reid think that the inverted lefties have their speech control in the left-hemisphere control, the same hemisphere as non-inverted right-handers. Non-inverted lefties are dominant in the right hemisphere like inverted righties. The lefties and righties are mirror images of the other. The findings result in 70% of left-handers and 99% of right-handers are controlled by the left hemisphere. These happen to be the exact findings of the sodium amytal procedure.
Conclusion
The area of handedness is filled with grey spots - there are no definite conclusions, nor definite proof of anything. The only fact is that for some reason, 10% of the world's inhabitants prefer to use the left hand over the right hand. In trying to explain this, the reasoning behind handedness center around protection, convenience, genetics, environment, brain hemisphere dominances, birthing process, and effect of body chemical levels. Which one is right? At this point, it's hard to tell. Researchers have been reluctant to explore this realm, because of the endless contradictions in numbers that result. Perhaps in the future, a method will be found to conclusively give an answer to the question of why left-handers are who and what they are.

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왼손잡이,   Left-handedness,   driving.,   accident,   times