Many years ago, the left-hander was accused of being a sin and a symbol of association with the devil. Of course, this shame has now been completely erased. Among the top seven presidents of the United States, there are four left-handers - Ford, Bush, Clinton and Obama. In proportion, about 90% of people are right-handers and 10% are left-handers. Some people think that left-handers have more expertise in doing certain jobs, while others think that left-handers are smarter and better. Is that true?
There are many studies on the IQ of left-handers and right-handers. In order to alleviate the symptoms of patients with epilepsy, some neurologists try to cut off the connection between their two hemispheres. These patients who have undergone surgery have a popular image called the split brain. Roger Sperry, a neurobiologist at the California Institute of Technology, was interested in split brains and did a series of experiments. He found that the two cerebral hemispheres have their own independence, and there are also different divisions of labor. If you let an right-handed split-brainer hold an object in his left hand, he will deny that he is holding something. Because the language center of most people is in the left hemisphere, the information perceived by the right hemisphere of the brain cannot be transmitted to the left hemisphere of the brain. This discovery has led scientists to pay more attention to the various possibilities of the left and right scorpions affecting the brain.
However, even if there is such a gap, it will not be very large, and this is only a statistically significant point of view for an individual. What***9;s more, whether a person can live happily and with quality does not necessarily have a great relationship with his IQ. Don***9;t be proud of being left-handed. Personal excellence is inseparable from your usual efforts and hard work.