Are left-handed people smarter? Why are there more left-handed boys? Huaxi doctors tell you the truth...

A left-handed person is the hope of the whole village from the moment he is born.

"Kids who use their left hand are smart!"

"That's not true. I read on the Internet that Newton, Bill Gates, and the president of the United States are all left-handed. This kid will have a bright future if he keeps showing some patience!"

"Kid, our village will depend on you from now on!"

…

But only they themselves know that the "king" who writes with his left hand, eats with his left hand, plays ball with his left hand, and wipes his butt with his left hand, and who has a higher IQ than others, actually has a lot of bitterness behind him, and he really can't bear the responsibility of revitalizing the whole village~

Today, Chen Sihan, a postdoctoral researcher in the Department of Neurology at West China Hospital of Sichuan University , will take you into the world of left-handed people to see if they are really smarter.

Please care for the left-handed people around you

Really, this world is so unfriendly to them.

90% of people in the world are right-handed, and only 10% are left-handed. Therefore, most of the rules in this world are designed according to the habits of right-handed people.

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👉 When writing, you have to twist your wrists into a knot to avoid staining your sleeves;

👉 When I swiped my subway card, the gate next door opened with a beep;

👉 When driving, you have to stretch your left hand across your entire body to engage the gear;

👉 When shaking hands, if the posture is not correct, it turns into holding hands;

👉 When wiping my butt...it doesn't seem to have any effect.

In short, please pay more attention to the left-handed people around you, because this right-handed world is "full of enemies for them."

Left-handedness may be determined in the womb

Many people used to think that left-handedness is formed in early childhood, but this is not true. The left-handed gene is already embedded in the body when the baby is in the womb.

" "An, that's not the case. I didn't see my baby using his left hand when he was young. He only started using his left hand when he grew up and started eating by himself. What's going on?"

"That's nonsense. Of course you can't see it when you can't even hold the chopsticks steadily! The formation of left-handedness or right-handedness is a gradual process. Generally speaking, it is not until the age of 3-7 that the tendency of being left-handed or right-handed will gradually form.

Although there is no complete conclusion yet on the formation of left-handedness, it is generally believed that due to the advantage of genetic heterozygosity, during the formation of the child's nervous system, the left brain, which was originally mainly responsible for the movement of the right limbs, undergoes some functional transfer , squeezing out the neural resources of the right brain, making the right brain more dominant, thus leading to left-handedness.

To put it simply: it’s fate.

In addition, among left-handed people, the proportion of men is greater than that of women. The reason is quite interesting:

During the long process of human evolution, men have to bear more competitive pressure. In order to make themselves stronger, male genes have adopted a more radical evolutionary strategy in gene heterozygous mutations. While there are high returns, there are also high risks, which leads to the advantages and disadvantages of left-handed people being equally prominent.

So, on the surface, it seems to be a question of left-handedness or right-handedness, but in fact, it is a question of gender ratio. (I didn’t expect it, it’s sublimated)

Are left-handed people really more likely to be talented?

Many people feel uneasy when they see the question mark after this title. Don’t panic. Do you mean that geniuses such as Newton, Madame Curie, Obama, Bill Gates, Beethoven, and Leonardo da Vinci are all left-handed, so left-handed people are smarter?

However, studies throughout history have found that there is no significant difference in IQ between left-handed and right-handed people.

Although the celebrities mentioned above are indeed left-handed, if you think about it carefully, there are more right-handed celebrities, who are ignored only because they use their right hand.

Rather than saying that left-handed people are more likely to produce geniuses, it would be better to say that left-handed people have a greater chance of producing both geniuses and mediocre people than right-handed people.

As we said in the second part, the reason for left-handedness is that some functions of the left hemisphere, which is responsible for the movement of the right limb, have been transferred to the right hemisphere. This transfer has led to the integration of neural functions, which will lead to two extremes:

Really got stronger

The probability of cognitive impairment increases

certainly,

Although left-handed people do not have an advantage in terms of IQ, they are more talented in culture, art, and sports because the right hemisphere of the human brain is responsible for controlling the movement of the left limbs, and the right brain is in charge of "art".

So this also explains why many left-handed people have better achievements in science, music, painting, sports, etc.

Should I make the left-handed

Forcefully "bring" it back

Although there was indeed discrimination against left-handed people in ancient times, as the successors of the new era who have completed nine years of compulsory education, we should still know that there is actually no benefit in doing so.

Left-handedness is determined by genes, not a disease, and does not need to be treated, let alone corrected forcibly.

If you must use violence to force it back, first consider whether you can afford the consequences:

Forcing a left-handed person to become right-handed may disrupt the child's original language center, causing stuttering, slurred speech and other consequences . It will also hinder the development of creativity and, more seriously, cause irreversible damage to the brain.

That’s not all. It will also cause damage to the baby’s young mind , making him/her self-doubt, frustrated and helpless, which is very detrimental to his/her growth!

So, although living in this right-handed world may cause many inconveniences for left-handed people, it is best to just go with the flow.

Instead of thinking about how to correct it, it is better to guide left-handed people to use their right hand more. Developing both sides of the brain at the same time will promote intellectual development, and it may really become the "hope of the whole village."

In fact, most of us are left-handed.

Don't believe it?

Do you prefer to answer the phone with your left ear or your right ear?

When you walk, do you tend to put your left foot or your right foot forward first?

Do you rely more on your left eye or your right eye when seeing?

He also said that he is not left-handed.

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