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It's genetic. Same reason people become brown-eyed.
It is not necessarily a genetic thing. No research has determined yet what causes some individuals to be left hande and what cause others to be right handed. If you are right or left handed, you can actually train yourself to be the other if you want by not using your dominant hand and using the other. It, of course, will be tough, but if you keep at, you can do it. After a ling enough period of time, you may not even feel right doing things with the hand that was previously dominant. It's all about stimulating the neurons in the non-dominant hand that wer not previously being used.
Wiki User
∙ 14y ago
Handedness is thought to be influenced by a combination of genetic, environmental, and hormonal factors. It is believed that handedness is established early in life and can be influenced by both genetic inheritance and the individual's development in the womb. Some studies suggest that left-handedness may be associated with differences in brain structure and function.
Wiki User
∙ 10y agoIt is the way we evolved.My hypothesis is that humans advanced over other hominids because of our throwing skills. 90% of world population lives in the northern hemisphere and this necessitates 90% of us to be right-handers.
http://ilupper.blogspot.com/2011/12/right-handedness-addendum-to-i-need.html
Wiki User
∙ 14y agobecause the nerve endings int he right hand has less muscle and it also means that at birth the left hand was the hand to come out at first.
Wiki User
∙ 13y agoActually there are more right-handed people because being right-handed is a dominant trait, while being left-handed is a recessive trait.
Wiki User
∙ 12y agothere are only 11% of the worlds population therefore there are more right handed people in the world
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Are left handed people really inferior at all?
No, being left hand oriented does not directly affect the persons intelligence, or physical ability in any way. I suppose you could make a case, however, for the fact that left handed individuals are slightly inconvenienced by everything being made for right handed people, but since lefties are always using right handed things, at least in my own experience I have found that I am better with my right hand than righties are with their left. It is also a way in which some may consider becoming ambidextrous, which is of course superior to single handed utility.
What percentage of people are left handed?
It varies, it is between 7-10% of the populationAnswerThere are a lot of different answers to this, believe it or not, because the people doing the studies generally look at one age group (or very few different groups). Way back when, all kids in school were encouraged to use their right hand for writing - even to the point that they got punished sometimes. It's much more common for kids and young adults to be left-handed now because of this reason. Also, it depends on what you call "left-handed". Does that mean you write with it? What if you write with the left and do everything else, like play the guitar and throw baseballs with the right? There's a few people out there that only use their left hand for writing and it feels more natural to use the right for nearly everything else. (The opposite of that is also true.)For a number, though, when taking into account old people and young, the number is usually right around 7%. When looking at schools now, it is usually working out to right around 10%. I've actually noticed this... Usually high school (just a few years ago) there were about three left-handers in the class, me and two others, when class size was about 30 people.I know there's a lot here, and it was a simple question, but I figured I'd try to open your mind a little.
Is it true that left handed people have a shorter life expectancy than right handed people?
There is no difference in life expectancy between left and right handed people. There was a controversial study done in 1980 by Halpern & Coren that suggested left-handed people had an average life expectancy of 9 years less than right-handed people. However, data was based on second-hand information: surveys from the next-of-kin of recently deceased persons asking about right/left handedness and age of death. They found left-handed average age of death was 66; right-handed average age was 75. Unfortunately, this study keeps getting quoted even though more recent data has shown their hypothesis is not supported. Second hand survey data is not a sound methodology. In addition, if a study reports a higher mortality rate (or any other "problem") in left-handers, then it's very important to look at the research design and how the data was analyzed. Simply checking the sample sizes will give a good indication of whether it was a "real" significant difference. If the sample sizes are large, and most studies have sample sizes of 1,000 or more, then there will be a "statistically" significant difference between groups (i.e.: Left versus Right) even if the amount of variance explained by the two groups is very small, which means there is no clinical significance. A statistical significant difference does not mean it has clinical or meaningful significance. Many statistical tests will give a significant difference only because of large sample sizes. Therefore, the measure of explained variance needs to be computed because it is unaffected by sample size. More recent studies have disputed the notion that left-handed people die earlier. For example, see the study by Aggleton, Bland, Kentridge, & Neave in the British Medical Journal at http://bmj.bmjjournals.com for more information. In addition, for a discussion of the Halpern & Coren study, see the link: http://bmj.bmjjournals.com/cgi/content/full/308/6925/408 (from http://www.drdaveanddee.com/left.html)
Which famous people are left handed?
Barack Obama Angelina Jolie Rita Simons (Roxy EastEnders) Leonardo Da Vinci Drew Barrymore Kim Basinger Tom Cruise Robert De Niro Nicole Kidman Lisa Kudrow Marilyn Monroe Mary-Kate & Ashley Olsen Sarah Jessica Parker Brad Pitt David Bowie Celine Dion Eminem Albert Einstein Queen Mother Prince William These people are all left handed, and don't forget Paul McCartney, probably the most famous of anyone on the list.
Which groups of people may have more right to life than others according to some?
There is no one group. All people have a right to life.
Would it be better to be left handed or right handed?
Most people are right handed & fewer people are left handed. Some people even think it's better to be right handed! But the truth is, it really doesn't matter. So if you're left or right handed...Both of them are good!
Why are there two shifts?
Some people are left handed some a right handed it's political.
Are left handed people abnormal in sense?
Maybe unusual in that most people are right handed. But, as the saying goes, only left handed people are in their right mind. they are not abnormal in a sense because left-handed individual only have most developed right brain hemisphere that ables them to write or even to work with there left. they are some incident that left-handed individual might gotused-to in using there left hand in such works.
Is it possible to play guitar right handed when your left handed?
It is very possible. It may be hard, but it can be done with practice. Some people are born left handed and learn to be right handed too. This is called being Ambidextrous. It is more common for people to be Ambidextrous than left handed. But once again, it is possible.
Is Niall Horan both left handed and right handed?
Mostly left handed but he uses his right hand for some things.
What hands Europeans write with?
Has nothing to do with being European or not. Right handed people write with their right, left handed write with their left. There may be some backward places still around, where left handed people are forced to learn to write with their right. But they're getting rarer each year.
Why boys wearing watch on left hand?
Which ever one they want to. But left handed people usually put it on their right, because it gets in the way when writing. and vice versa with right handed people.
Why most of us is using right handed?
It's because some people were born with the habit of being left-handed.
Why are there two shift keys?
Some people are left handed some a right handed it's political.
Why do some right-handed people hold a fork with the left hand and a knife in the right hand?
i dont no, maybe you should put them on the left side and you might be happy
Why are there two shift buttons on a computer?
Because some people are left handed and others are right handed. It's based on preference
Was left speaking sign language in a video called unpretty?
Hi: Left is fine. If you are dominantly comfortable being left-handed in sign language, then you can sign with your left dominant hand. Though even some people, who are dominantly left-handed in writing, are right-handed in signing.Whichever right- or left-handed you are, remember that you must be consistent with it. If you are right-handed, use your right hand as dominant. If left-handed, use your left hand as dominant. It is not interchangeable. If you are ambidextrous, you should choose one as your dominant hand and stay consistent with it.
