It is said that pure left-handers speak like ordinary people-just a little different from right-handers because their right brain is more developed than the left brain that manages language.

Left-handed characteristics

Maybe we can leave medical problems to experts in brain nerve and cognitive behavior to study. However, the following things have been confirmed to excite supporters:

1. Think things are different from others. Before writing or drawing, left-handed people often think about the images that have been formed in their minds. Many left-handed people will try their best to reassemble the fragmentary materials they can't remember into pages of pictures and remember them. Just like Buruli, the father of modern architecture, in the14th century, he could put forward digital graphics to explain how to build Florence Dome Cathedral. "I have thought about what it will look like when it is finished." He said that he beat the bidders from all over Europe.

Some people think that this ability explains why many left-handed people are outstanding in issues involving space and art.

2. Strong mathematical ability, strong visual perspective ability and strong spatial ability are conducive to the development of mathematics and architecture. 1990 Annet &； Manning's research found a correlation between right-handedness and lack of mathematical ability.

3. If a right-handed person has a close relative (such as a brother or sister) who is left-handed, then the right-handed person's memory is better than that of the whole family who are purely right-handed.

According to a study by the University of Toledo, Ohio, right-handed people, close relatives of left-handers, show strong situational memory (such as where the keys are conveniently placed after entering the door). Although the semantic memory stored in the database (for example, the year from World War II to the end) is poor, it may be because the information itself has a left brain and the spatio-temporal background information of things has a right brain, so combining the two can enhance the situational memory. Researchers suspect that the corpus callosum that may connect the left and right brains is very large, indicating that your brain structure is a mixture of the left and right halves.

4. Left-handed people seem to perform well in sports that require quick response and correct spatial judgment. People who are more flexible and stronger with their left hand, left foot and left eye, especially in tennis, football and golf, often perform better than others. Tennis celebrities such as Naratinova, Connors, Mackenzie, etc.

Left-handed people also have an advantage, because right-handed people are not used to playing with him. Some left-handers can even switch to the right hand to swing or swing when necessary, which most right-handers can't do. Like fencing, a sport in which two people fight each other, left-handed people also have special advantages, and the proportion of winning the championship is very high.

6. People with strong left hand, strong right foot and strong right eye may have the problem of uncoordinated integration, which especially affects the swing action, because the line of sight may sometimes be limited. But it is beneficial to gymnastics, running, basketball and other games that require a strong sense of physical balance.

7. It is much more difficult for a right-handed person to do things with his left hand than for a left-handed person. Moreover, left-handed people are more willing to listen, accept or consider other people's opinions and ideas. This is related to the fact that left-handed people have been adapting to the environment all their lives, learning when to cross their bodies with their left hands or when to switch to their right hands, and overcoming difficulties is related to constant practice.

Thirdly, there are many related studies, but they have not yet reached the final stage, including:

8. Poor autoimmune system, including asthma, migraine, diabetes, autism (65% of autistic patients are left-handed) and learning disabilities. However, in 199 1, another study refutes this theory.

9. The School of Medicine of the Royal Free University of London recently suspected that left-handed people are twice as likely as right-handed people to suffer from inflammatory intestinal diseases (such as Crohn's disease, with symptoms of pain, severe diarrhea, intestinal bleeding, weight loss and fever).

1860 French surgeon Brock said that the left brain of left-handed people is underdeveloped, which affects their language ability. However, some people retort that it is too simplistic and irresponsible to draw the relationship between breakup and brain in this way.

/kloc-many studies in the 1970s found that most left-handed people, like others, have the same specialized language area in their left brain, and only a small number of left-handed people have different language areas. So using the left hand will not cause literacy or arithmetic difficulties. If the child has a problem, find out the real problem.

10, left-handed people live 9 years less than right-handed people on average.

1 1. American psychologists Kong Rong and He Kun suspect that the average life expectancy of left-handed people will be 9 years shorter than that of right-handed people (66 years versus 75 years). When this statement came out, the group was in an uproar.

Later, it was refuted by the research community that they used fallacious research methods to forcibly support their assumptions (left-handed people drive cars designed for right-handed people, operate backhand, and respond in an emergency). Kong Rong and He Kun asked their families about 1000 car accident victims in a small town in southern California, whether the victims were left-handed or right-handed, but only three of them became left-handed, and there was no way to prove whether these three people really died in a car accident because of being left-handed.