WE KNOW WHEN WE LEFT-HANDED?
28/01/2016
WE KNOW WHEN WE LEFT-HANDED?
Typically, a child begins to show handedness between 3 and 5 years, ie, from the moment that you are required to perform tasks such as holding a pencil or spoon.
There are three possible reasons why a person becomes manifest as left-handed. The first, and most common, is the genetic cause, which determines from the cradle we want with more momentum primarily use one of our sides. "The gene is recessive, so it is not something that is transmitted with certainty from parent to child, often even skip generations," explains the creator of the Zurdoteca. The second cause may be due to environmental influence. "Commonly lefties forced to stop being" he says.
Finally, the third cause is due to a disease, trauma or neurological accident for which "a person who is not born left-handed is unable to use his right hand and getting accustomed mastery of his left hand," he concludes.
