The left-handers differ from right-handers: features

In the modern world, people who use left hand for the main actions are often met. It is worth noting, even less than a century ago, they were much smaller. How to explain what is happening? The fact is that the number of lefties has not increased, it was just before such people were forced to "retrain" even in their childhood. It was believed that such a rare feature is unacceptable for society. In addition, many parents associated "left-handedness" with problems in education (in time they did not teach to use the "right" upper limb). At the moment, the opinion on this has changed significantly. To date, it is known that eating food or writing with your left hand is normal. So not only most parents believe, but also doctors.

Why do some people write with their right hand, while others write with their left?

At first glance, people who often use the left upper limb are exactly the same as the "right-handed" population. However, this is not quite true. What are left-handers different from right-handers and why? The answer to this question appeared not so long ago, since the study of this phenomenon engaged in neuro-scientists. Before you understand what the difference is, you need to find out the reason why some people use their right hand more often, while others use the left hand. Factors include:

1. Genetic predisposition. The main cause of left-handedness is the predominance of the right hemisphere of the brain. This does not mean that only part of the central nervous system works. However, the right side is considered more developed. This feature is inherited.
2. Hormonal theory. Some scientists believe that the birth of a left-hander leads to an increased effect of testosterone on the body of a pregnant woman and fetus.
3. Injuries to the right arm. Sometimes, a person becomes left-handed not because his right cerebral hemisphere predominates, but because of prolonged wearing of gypsum, muscle atrophy, paralysis.
4. "Copying" the actions of others. This reason applies to children. Often the child starts using his left hand, looking at how parents or other relatives write or eat (friends in preschool, grandmother, nanny).

In some cases, incorrect formation of brain activity is associated with trauma and lack of oxygen in late pregnancy. In addition to "left-handedness", serious violations are formed. They include: delay in development, speech, mental retardation, etc.

The relationship between left-handedness and the work of the brain

So what is the difference between a left-handed man and a right-hander? In fact, there is no significant difference. If a person uses his left hand more often, this does not mean that he has deviations. Also, this feature does not affect mental and physical abilities. The only difference is the predominance of the right cerebral hemisphere, which is responsible for creative activity.

In some cases, a person copes equally with the usual (everyday) actions with both hands. Nevertheless, in the process of training, the use of the right, and, more rarely, of the left upper limb, predominates. Such people have the same hemispheres of the brain.

How to distinguish between left-handers and right-handers?

What are the left-hander's children different from right-handed people, and how to detect this feature in a child? At an early age it is difficult to understand which hemisphere of the brain predominates. Often, children use both hands. The first differences between left-handers and right-handers are found approximately to 2-3 years, when the children begin to eat and draw on their own. However, this is not a reliable indicator either. After all, in addition to the hand, the left eye and ear should dominate. It is possible to find out which hemisphere is leading, in several ways. Among them:

1. Invite the subject to cross his hands in the castle. In this case, it is necessary to assess the location of the fingers. In most cases, the right one is located on the top (outside). Left-handed players will have the opposite result.
2. Test with a clock. The child is given an alarm clock, which he must hold with both hands. After this, the subject is asked to listen to the ticking of the clock. Pay attention to what ear the child will bring the alarm clock. This side will be the leading one.
3. Test for the definition of the "prevailing" eye. A man is given a folded sheet of paper and asked to look through it. It is necessary to pay attention to which eye the subject will bring up with the "telescope".

All these tests are performed for children over 5 years old, as well as for adults. In some cases, the "leading" ear and eye can be left, and the hand - the right. This result indicates that the child was retrained, or about the same development of both hemispheres of the brain.

What are left-handers different from right-handers: the difference in behavior

The behavior of "left-handed" people does not differ significantly from those who use the right upper limb more actively. It is especially difficult to notice differences in adulthood. After all, many factors influence the behavior of a person: the characteristics of upbringing, the acquired life experience, etc. So, what are the left-handers different from right-handed people? Features of behavior are easier to identify in children. A child - a southpaw is considered to be a mostly creative person, prefers to draw, independently devises games and characters. At school such children are more likely to study the humanities.

What is the difference between a left-hander and a right-hander: the psychology of personality

Scientists have repeatedly conducted various studies to identify the difference in psychology between left-handers and right-handers. In addition to creativity, the predominance of one hemisphere affects mental and emotional reactions. In addition, it is believed that the lefties have more developed ability to express their thoughts, that is, oratory. It is believed that people who are dominated by the right cerebral hemisphere, tend to be closed (introverted), aggressive and asthenic. Despite this, left-handers differ in unusual thinking. Among them - a large number of scientists, artists and musicians.

What if the child is left-handed?

What are left-handers different from right-handers, and what if the child more often uses the wrong hand? More recently, it was believed that this feature should be addressed. However, this opinion is erroneous. After all, if you force a child to do everything with his right hand, this will not change his brain activity. In addition, retraining can lead to psychological problems. The child begins to be shy of his natural features, consider himself not like everyone else. Another negative consequence of retraining is the formation of a bad handwriting. Therefore, a left-handed child should not be forced to write and eat with his right hand, if it is so uncomfortable for him. On the contrary, it is necessary to inspire the child, that its feature is completely normal.

Special handles for left-handers

To help left-handers, special school supplies were invented. After all, it is not very convenient for such children to use familiar objects. What is the difference between the handles for left-handers and right-handers, as well as other office supplies? Among the items created to facilitate work, there are special sharpeners with a blade directed counter-clockwise, scissors, surgical instruments , etc. Pens differ in that they have special grooves for the fingers of the left hand. In some stores, you can find even lines with the reverse arrangement of numbers.

World-famous lefties

What are left-handers different from right-handers, and what examples are found in history? Everyone knows such names as Albert Einstein, Leonardo to Vinci, Isaac Newton, Wolfgang Amadeus Mozart, etc. However, not everyone knows that these people differed not only in their talent, but also in their left-handedness. Among the contemporaries can be identified millionaires Henry Ford, Bill Gates, musician Paul McCartney, actors - Keanu Reeves, Nicole Kidman, Whoopi Goldberg, etc.