People who use the right hand for writing and other activities that require fine, controlled movements, are referred to as rights.
People using his left hand to write and fine and precision movements are called lefties.
There are also individuals who use either the left or right hand for writing and other actions. These are called ambidextrous.
All this is due to the brain called laterality. For lefties, it is the right hemisphere controls the left side of the body. Rights, is the left hemisphere that takes control of the right side of the body.
The percentage of left-handers is higher among men than women. The percentage of lefties in the Asian countries is higher than in Europe, Africa or America.
IQ between lefties and righties are practically the same.
