Why do people have their hands dominant?
Although there is no coincidence, why people have dominant hands, there seems to be no lack of theories about how handedness comes. There are four recognized types of handedness.
Most of the world's population is on the right side. Another most common is the left hand, which is assumed that up to 10% of the population is. Mixed handedness is when some individuals use the right hand for one activity such as writing and their left for tennis. Finally, there is ambidexterity, which is very rare. Being actually bilateral means that both hands are used equally for all activities. The surprise of ambidexterity is Ambilevous or Ambisinister, in which the individual is equally poor when he uses both hands.
One theory that is just beginning to decrease, says the dominant hands are the result of both hands working. This is called bilateral coordination. It is a process in which both hands work together to accompany the task. What you have is the hand of the worker that is considered fromAnd traditionally as a dominant hand that will perform a fine motor task. Your dominant hand is considered a helping hand and performs gross motor skills such as the stabilization of the object.
When we talk about dominant hands, the most common theory is the division of work. This concerns the hemisphere of the brain and the way in which the information is processed and divided between hemispheres and fine motor skills in hands, eyes, legs and ears. It is generally known that speaking and communication activities in humans are carried out on the left hemisphere of the brain. The main argument against this theory claims that what is true for people with right hand should be the opposite for people. In other words, people should process the left on the right hemisphere of their brain. This is not entirely, causing erroneous theory.
In 2007, scientists are looking for the left handedness gene found by Lrrtm1. This gene gives some credibility mThe allegation that having dominant hands can be genetic. This theory is also tested for validity because the gene also carries other features. However, there are only about 1 out of 4 chances that he will have a left child if both parents are left.
Having a dominant hand may not seem as an important thing as you write a check for food, but the consequences are quite deep. Scientists believe there is a relationship between learning and handedness. Finding answers to the dominant hands could unlock seemingly unrelated problems such as dyslexia and stuttering.