A lot of people constantly wonder why there are righties and lefties. It's really a very interesting fact.
There is no generally accepted and clear explanation of why some people are right — handed and others left — handed. However, for this reason there are several theories. One of them is that our body is asymmetrical (the right half is not identical to the left). Therefore, the right and left hemispheres of the human brain operate too differently. Also, nerves connect each hemisphere on the opposite side of the body: the right hemisphere with the left and Vice versa.
It follows that if the left part of the brain has the advantage, then the right part of the body is more perfect, and better adapted. Everything we do in life (reading, cooking, writing) — this is due to the left hemisphere of the brain. Have lefties on the contrary: is a permutation, the right side of the brain dominates the left, so people better hold the left side of the body. Such a trait is often inherited, in this regard, the parents of left-handers rather the child is born left-handed and right-handed right — handed.
Approximately every tenth person is left — handed. According to the observations, girls are twice less left-handers than among boys. This difference is explained by the fact that both hemispheres of the brain are responsible for different aspects of life. The right hemisphere of the brain is responsible for perception and emotions, so lefties all perceive collectively and intuitively. The left hemisphere, in turn, is responsible for details and analysis, so right-handed people are more inclined to logic and rationality.
As a rule, in 5 years becomes finally clear you're a Lefty or a righty. And since they are born, and to be retrained not to be. The reason is hiding in the brain, which in any case will not work otherwise. Therefore, the retrained left-handers may be more difficult to write and to learn in General.
According to sociological theory, because of its exclusivity left-hander showed better results in certain types of activities. The left hand is often dominated by the composers, artists, athletes, teachers; the right of linguists, engineers, mathematicians.
- Leonardo Da Vinci
- Charlie Chaplin
- Julius Caesar