Left-handed and right-handed – why are people divided into these two types? Why are some people more able to work with their right hand, and others with their left?
Scientific studies focused on this subject have shown that left-handed and right-handed people have different brains, and the choice of the dominant hand is, rather, the consequence of this, and not the cause.
They haven’t identified any specific genes as the major factor, but experts note that left-handedness is more common in families where there are already people with this peculiarity. In addition, they found that the thinking style of left-handed and right-handed people is largely different.
As left-handed people have to adjust their whole lives to the right-handed world, they are more independent.
Below are the most interesting facts about left-handers, which you may not have known by now:
- Lefties represent 5-10% of the total world population.
- The word “left” has an Anglo-Saxon origin and it derives from the old word “lyft”, which means weak or broken.
- In most cases, left-handers use the right half of their brain, in contrast to right-handers, who use the left half more often.
- Lefties are particularly great at sports such as swimming, boxing, tennis, baseball.
- More than 40% of the world’s leading tennis players are left-handed.
- Left-handers are able to see more clearly underwater than right-handers.
- A survey published in the British Journal of Health Psychology, of more than 25,000 subjects from 12 countries showed that left-handers drink more often.
- Lefties are late-bloomers, which means they usually reach puberty, on average five months later than right-handers.
- According to statistics, of all college graduates who achieved a successful career lefties are 26% more than righties.
- In the United States, four out of every seven people are left-handers.
- In animals such as cats, mice and rats, the percentage of dominance of left-handedness and right-handedness is divided equally.
- Some of the longest English words can be typed on a QWERTY keyboard with the left hand only, such as dresses, sweater, tesserae, and decades.
- One of the four Apollo astronauts was left-handed.
- Studies show that left-handers are more talented in mathematics, architecture and spatial awareness, while right-handers have more developed verbal skills.
- Left-handed people even have their own special day: August 13 is the International Day of the Lefties.
- In the past, it was believed that lefties were more prone to harmful habits, rebellion and aggression, neuroses, homosexuality, crime. In parallel with this, left-handedness has been associated with creativity and music too.
- Left-handed persons are more prone to insomnia compared to right-handed.
- According to statistics, there are more than 30 million left-handed people in the United States, which is approximately 10% of the U.S. population.
- Statistics show that women, who are pregnant in their 40s, have 128% higher chances of giving birth to a left-handed child.
- As a result of a small study published in the Journal of Nervous and Mental Disease, it turned out that left-handers show emotions differently than right-handers. For example, they can get angrier more quickly.
- According to research results, left-handed people are more likely to suffer from allergies and asthma compared to right-handed people.
- Left-handedness is a hereditary feature. For example, all members of the royal family in Great Britain: Queen Elizabeth II, princes William and Charles, Queen Mother are/were left-handed.
- Medical scientists have determined that if a left-handed person injures the dominant hand, they learn to use the other hand much faster than a right-handed individual does.
- Some of the cruelest and most notorious killers in human history were left-handers, such as Jack the Ripper, the Boston Strangler and Osama bin Laden.