The ambidextrous person is one who is able to develop with the same skill with both his right hand and his left hand. It should be noted that usually each individual has more skill with one hand than the other and it is unusual to be able to use both hands with the same efficiency.
In relation to the use of hands, there are three options. The most common is being right-handed, which involves using your right hand for most actions such as writing, eating, picking up an object , etc.
Those who use the left hand better are called left-handed and this possibility is less frequent, on the other hand, historically, the prevalence of the left hand is considered a deviation. Interestingly, the word left has the same etymological root as sinister.
A third possibility is to be ambidextrous, an atypical circumstance that can be considered an authentic rarity. Among the three possibilities, only the last is rated as something extraordinary and out of the ordinary.
Why are we right-handed, left-handed or ambidextrous?
The left hemisphere of the brain controls the movement of the right part of the body and, conversely, the right hemisphere regulates the activity of the left part of our body. Despite knowing a large part of brain functions, neuroscientists do not have a definitive answer that explains why we are right-handed most of the time (more than 80% of the world population).
One of the explanations for this issue may be the fact that language capacity is found in the left hemisphere and as the human being is the only animal that developed language, this explains the prevalence of right over left. In any case, the fact that ambidextrous people exist remains a mystery. What is known is that ambidextrous are simply 1% of the world’s population, do not have a dominant hemisphere and, according to some scholars, are prone to suffer from schizophrenia and learning disabilities.
The importance of the hand in human evolution
From an evolutionary point of view, it can be said that the hand has its own “history”. In the physiological process of transformation, the first human beings took an important step when they became bipeds.
Bipedalism allowed our hands to stop acting as a support for walking and became very useful tools, both for picking up food and for manipulating objects. In this way, the improvement of manual dexterity is one of the genuine characteristics of man’s evolution .