Why are some people left handed?
Most of the people in the world do most of their work with the help of their right hands; but 4% of the world population is left handed. If we go through the history of mankind we find that many of the great men of the world have left handed. The world famous sculptors Leonardo Ad Vinci and Michelangelo both were left handed. Parents of the left handed children usually feel worried about this habit and make efforts to correct it. But psychologists believe that if a child is a left handed he should not be forced to hanger this habit.
People whose right hemisphere of the brain is dominant are left-handers
If we examine the constitution of the body carefully we will notice that our body is not fully symmetrical. There is a little asymmetry between the left and right side of the body. Generally right side of the body id lightly heavier than the left parts. Even the functions of these parts are somewhat different. Usually the left half of the brain is predominant over the right half. In such cases, the nerves from the brain cross over at the level of the neck and go to the right side of the body. Such persons are right handed. Most people of the world fall under this category. But there are cases where right half of the brain is predominant over the left, nerves coming our of the brain pass on to the left parts of the body. Such people perform all their functions with their left hands. That is why some children write and even eat food with left hand.
Have you wondered why left hander’s are in such a minority in comparison to the right hander’s? Scientists have not been able to solve this riddle till now. Since the number of right hander’s is so large, the door handles, locks, screwdrivers, and motorcars, musical instruments all are designed keeping in view the convenience of the right hander’s. Even buttons are fixed on the right side for the same reason. The left handed people experience some difficulty in handling all these but get used to the functions with a little effort.