‘Left-handedness’ is determined in the mother’s womb?

August 13th is International (World) Left-Handed Day. How did this day come about? And is left-handedness really determined in the womb of the mother? It tells an interesting story about left-handed people.

photo-layout image photo_12313 float-center" data-idxno="12313" data-type="photo" style="max-width:600px">

△ Origin of left-handed day

Dean Campbell of the United States founded the International Left-Handed Association in 1932 to publicize the hardships of left-handed people and to correct prejudice. Afterwards, the association established August 13, his birthday, in 1976 as the ‘International Left-Handed Day’, and has been an official commemorative event every year since 1992.

What is the proportion of left-handed people?

Left-handed people make up more than 10% of all adults worldwide. In Korea, it is less than 5%. About 2.5~3% of people eat with their left hand, and about 1% take notes with their left hand. The reason why Korea is below the global average is because of the past trend of banning or reluctance to be left-handed. For that reason, it is only 1% in Arab countries where the use of the left hand is taboo.

What causes left-handedness?

It’s not clear when left-handedness will be decided. Among them, most of the research results show that there is a large genetic influence. That is, if parents are left-handed, their children are more likely to be left-handed. Among them, men are especially genetically influenced, so if the father is left-handed, the son is more likely to be left-handed. Studies have shown that left-handedness is determined within 18 weeks of pregnancy.

△ Who is a famous left-handed person?

photo-layout image photo_12314 float-center" data-idxno="12314" data-type="photo" style="max-width:600px">

If the left brain, which is responsible for logic or reason, takes the lead, then it is right-handed, and if the right brain, which is in charge of intuition and emotion, takes the lead, it is left-handed. Therefore, there are many geniuses or artists among left-handed people. Renaissance painter Leonardo da Vinciphoto left), the sculptor Michelangelo, and geniuses such as Einstein, Beethoven, and Edison who discovered the theory of relativity are all left-handed. Bill Gates is also left-handed. In 1927, American ‘homerun king’ Babe Ruth and Yang Jun-hyeok and Lee Seung-yeop, who hit 60 home runs in one year,Right side), Ryu Hyun-jin, Choo Shin-su, and Lee Jung-hoo are also left-handed sports stars.

Send articles on social media

Leave a Reply

Your email address will not be published.

This site uses Akismet to reduce spam. Learn how your comment data is processed.

Never miss any important news. Subscribe to our newsletter.