What makes a person right or left-handed?

Answer 1

The left side of the brain controls the right side of the body. Most people have a better developed left side, and so most people are right-handed. But the habit can be formed by force in childhood. It is extremely rare to be left-handed in China or Japan, because Oriental parents always force their children to use their right hands. It is hard for a left-handed person to eat with chopsticks while sitting at a round table with other people, or writing Chinese characters. I have not yet seen anyone eating with chopsticks with his left hand. So Oriental parents are pretty successful at that. If the parents do not interfere, more people will become left-handed.

I am born left-handed, but few people noticed it. I write and eat with my right hand, and use the hammer with my left hand. So I am ambidextrous.

Answer 2

There are no known causes. This transpired in a single hour discussion between scientists shown on National Geographic Channel.

Scientists can only explain that your left side of your body is controlled by the right side of your brain, and the right side of your body is controlled by the left side of your brain. Other than this, they can't point with certainty what makes a person right or left-handed.

Answer 3

I think you inherit that from your parents o_o Genes >.> I actually don't know... If both of them were right handed then you'll be right handed and if one of them are left and the other is right it could be half chance >.>

Answer 4

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Answer 5

I don't think it's that important. There are some people who write with their right, and some with their left, or even both. I used to write with my left, but now I'm used to writing with the right. =]

Answer 6

I don't know that, but it is shown that if u r workin wid your right hand u r exercisin left half of your brain and vice versa.. [considering brain is divided into two parts]

Answer 7

it is my understanding that catholic school and nuns in particular make one right handed.

Answer 8

if a person uses their right hand and is better at doing things with their right hand. that makes them right handed.
same thing goes for left.
and equally well with both hands is ambidextris. (dunno if i spelled that right.)