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Is it true that left handed people have a shorter life expectancy than right handed people?
Yes..... Well that's what people and research say.
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Answer . 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)
They do not. On average, right handed people live 9 years longer than them.
to be right handed is a dominant trait, the left is recessive, plus with the the left hand you put your hand in a more awkward postion. :) get it? hope you do if you dont know… what dominant and recessive traits are, it has to do with genetics.
Actually there are more right-handed people because being right-handed is a dominant trait, while being left-handed is a recessive trait.
There is no scientific evidence to suggest left handed people are smarter than right handed people . Some studies have indicated a small (and perhaps coincidental) correl…ation between left-handedness and slightly increased creativity, but this has not been substantiated.
Because it the way your born
It just depends on what hand you choose to write with. You can be ambidextrous or even teach yourself how to write with your other hand.
There is no scientific evidence to suggest right handed people are smarter than left handed people . Some studies have indicated a small (and perhaps coincidental) correl…ation between left-handedness and slightly increased creativity, but this has not been substantiated.
That is controlled by the brain, which can be conditioned. Early-stage Alzheimer's patients (in the US) are being taught to use the opposite of their dominant hand to inspire …the brain to use existing brain cells and generate fresh new brain cells.
no which hand you write with has no effct what so ever on your health
I know why. A lot of people train themselves to be like that, but most are born like that. It's a genetic thing and most people don't find out until they use both hands.
Well, if you are both handed, it means that you are ambidextrious. These people sometimes become ambidextrious by practicing constantly with the opposite hand. There are diffe…rent ways in which you are ambidextrious. For instance, i am ambidextrious in one way because i open stuff with both hands. Another way i am ambidextrious is because i can write with both hands. But i am more accurate with my right hand. Some people are different because they may be born left handed but some one else taught them that they're using the wrong hand. This happened to me. I was SUPPOSED to be left handed. Hope this helped you!
Right-handed on people, on average, do live longer than Left-handed people. The primary reason for this being accidents with tools, which are predominantly designed for the… right-handed, occurring more frequently with the left-hand dominant. This is especially true with power tools, or using tools in precarious positions, the top of a ladder being just one example.
It is the way we evolved.My hypothesis is that humans advanced overother hominids because of our throwing skills. 90% of worldpopulation lives in the northern hemisphere and t…his necessitates90% of us to be right-handers. http://ilupper.blogspot.com/2011/12/right-handedness-addendum-to-i-need.html
just going to say that it really does bnot matter u know some people use their mputh or feet to paint with. MATTERS ON YOUR INTEREST ABILITY AND SKILLS
No! It is just more common to be right handed. In order to be left handed it must come from both set of jeans( rare).