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  • Left-handed Presidents

    Left-handed people constitute about 10-15% of the U.S. population. Barack obama is left-handed. With the election of Barack Obama, we will have had 6 left-handed Presidents since World War II. William Jefferson Clinton is left-handed. George H. W. Bush is left-handed. Ronald Reagan was left-handed and was forced to write with his hand as a child. Gerald Ford was left-handed. Harry Truman was left-handed. Roosevelt, Eisenhower, Kennedy, Nixon, Carter, and George W. Bush were or are right-handed. So, of the 12 post-war presidents, half were or are left-handed [source]http://www.washingtonpost.com/wp-dyn/content/article/2008/07/03/AR2008070303202.html[/source].

    So, is there a vast left-handed conspiracy going on, at least for politicians? Note that John McCain is a left-hander [source]http://www.post-gazette.com/pg/08056/860162-294.stm[/source]. So, what are the odds that we would have two left-handed presidential candidates. Let's say that 10% of the U.S. population is left-handed. The odds that both candidates will be right-handed is 9 x 9 or 81%. The odds that one candidate will be right- and the other left-handed 9 x 2 or 18%. The odds that both will be left-handed will be only 1%. Four of the last five presidents were left-handed. If McCain had won in 2000 and Kerry had won in 2004, six of the last six president would have been left-handed. Kerry is left-handed except that he throws with his right. The above are all statistically highly improbable, suggesting that there is a strong selection factor for lefties to run for and to become President of the United States, at least in the last 50 years.

    Wise.

  • #2
    Well now .... I'm left handed ... but have absolutely no desire to be president of any country... not even CareCure . My teachers tried to switch my "writing hand" to the right hand ..... bad idea .. really bad .. why'd they do that it scarred me for life !!

    Obie
    ~ Be the change you wish to see in the world ~ Mahatma Gandi


    " calling all Angels ...... calling all Angels ....walk me through this one .. don't leave me alone .... calling all Angels .... calling all Angels .... we're tryin' and we're hopin' cause we're not sure how ....... this .... goes ..."
    Jane Siberry

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    • #3
      and what about vice presidents? maybe mccain lost bcause palin was right-handed. yup that must be it..
      http://www.facebook.com/ivicamaotze.rod

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      • #4
        I'm only left-handed when I want it to be a first date. LOL.
        Back when I could write, when I would try to write with my left hand, my handwriting was almost exactly the same just backwards. What does that mean?
        C-5/6, 7-9-2000
        Scottsdale, AZ

        Make the best out of today because yesterday is gone and tomorrow may never come. Nobody knows that better than those of us that have almost died from spinal cord injury.

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        • #5
          Originally posted by Obieone View Post
          Well now .... I'm left handed ... but have absolutely no desire to be president of any country... not even CareCure . My teachers tried to switch my "writing hand" to the right hand ..... bad idea .. really bad .. why'd they do that it scarred me for life !!

          Obie

          Ahh, Obie. Maybe having two X-chromosomes negates the driving effects of left-handedness for presidency... No female president so far. I rest my case. Wise.

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          • #6
            Originally posted by rybread View Post
            I'm only left-handed when I want it to be a first date. LOL.
            Back when I could write, when I would try to write with my left hand, my handwriting was almost exactly the same just backwards. What does that mean?
            rybread, you are wierd? Actually, the mirror writing that you describe is interesting. In some ways, it makes sense. Do you have trouble distinguish between b and d, p and q, etc. Wise.

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            • #7
              Originally posted by Wise Young View Post
              rybread, you are wierd?
              Thank you. I do my best.

              Originally posted by Wise Young View Post
              Actually, the mirror writing that you describe is interesting. In some ways, it makes sense. Do you have trouble distinguish between b and d, p and q, etc. Wise.
              I've never had a problem distinguishing between those letters, but being a mechanic, I had to be somewhat ambidextrous to reach in tight spots that I can't see with either hand. Does it have anything to do with me being able to do pretty complex math in my head? Not to mention my ability to be able to manipulate objects in my head three dimensionally?
              C-5/6, 7-9-2000
              Scottsdale, AZ

              Make the best out of today because yesterday is gone and tomorrow may never come. Nobody knows that better than those of us that have almost died from spinal cord injury.

              Comment


              • #8
                Originally posted by rybread View Post
                Thank you. I do my best.


                I've never had a problem distinguishing between those letters, but being a mechanic, I had to be somewhat ambidextrous to reach in tight spots that I can't see with either hand. Does it have anything to do with me being able to do pretty complex math in my head? Not to mention my ability to be able to manipulate objects in my head three dimensionally?
                There is probably some academic cognitive science department somewhere that would be interested in studying you. . wise.

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                • #9
                  I have been left handed, since birth. When I was a kid, I started out writing backwards, (mirror writing). My Mom told me it was also upside down. I don't rmember the part about being upside down, but even now, it seems more natural to write backwards at times.

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                  • #10
                    Originally posted by rybread View Post
                    Thank you. I do my best.


                    I've never had a problem distinguishing between those letters, but being a mechanic, I had to be somewhat ambidextrous to reach in tight spots that I can't see with either hand. Does it have anything to do with me being able to do pretty complex math in my head? Not to mention my ability to be able to manipulate objects in my head three dimensionally?
                    My son is amidextrous and also has this spatial modeling and mathematic ability, not inherited from me. I wonder if this has anything to do with the left and right sides of the brain working more in unison in individuals with these abilities. I also read that Leonardo Da Vinci was ambidextrous and practised mirror writing.

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                    • #11
                      Originally posted by IanTPoulter View Post
                      My son is amidextrous and also has this spatial modeling and mathematic ability, not inherited from me. I wonder if this has anything to do with the left and right sides of the brain working more in unison in individuals with these abilities. I also read that Leonardo Da Vinci was ambidextrous and practised mirror writing.
                      Ian, thanks. I have been racking my brains out to remember who that famous person was that did mirror writing. Leonardo da Vinci was it.

                      While it is often thought to be rare, a recent study suggests that it is quite common amongst left handers:
                      http://archneur.ama-assn.org/cgi/con...12/1849?ck=nck
                      Mirror Writing, Left-handedness, and Leftward Scripts

                      G. D. Schott, MD, FRCP; J. M. Schott, MD, MRCP

                      Arch Neurol. 2004;61:1849-1851.

                      ABSTRACT


                      This minireview concerns a new observation on mirror writing. An uncommon form of writing, mirror writing is seen among healthy individuals, but it can also follow a variety of neurological diseases; it is nearly always carried out with the left hand and is more easily undertaken by left-handers. We have found that a particularly high prevalence of left-handed mirror writing has been reported among those whose native languages are traditionally written in a leftward direction, including Chinese, Japanese, and Hebrew. Innate left-handers and those whose languages are written leftward thus share an unusual facility for left-handed mirror writing, an observation that may have implications for understanding hemisphere specialization in relation to handedness.

                      INTRODUCTION

                      Mirror writing runs in the opposite direction to normal and with letters reversed, and it is most easily read using a mirror. It is usually written leftward with the left hand, and its occurrence often appears to be linked to the circumstances in which left-handed writing emerges. The characteristics of mirror writing, the circumstances in which it occurs, and many of the theories thought to explain it were reviewed over 70 years,1 and subsequent clinical and theoretical aspects have been briefly reviewed more recently.2

                      Transient mirror writing sometimes occurs in both left-handed and right-handed healthy children as a normal phase during writing development. In right-handed adults who write with their left hand, mirror writing can be produced at will and for fun, and it is undertaken by lithographers, printers, and others for occupational purposes. Transient left-handed mirror writing is also sometimes observed when conventional writing is no longer possible in otherwise healthy right-handed individuals, for example, after the right arm has been damaged.

                      Pathological left-handed mirror writing in children has long been noted to be particularly common in dyslexia or more nonspecific "learning difficulties."3 In adults, pathologically acquired mirror writing most commonly occurs in focal diseases affecting the left hemisphere, in particular a stroke that results in a right hemiplegia when writing with the left hand becomes necessary.1, 4 Extremely rarely, left-handed mirror writing after a right hemisphere stroke has been reported. Mirror writing with the left hand has also been associated with diffuse cerebral disorders, including head injury, and various neurodegenerative processes, including Parkinson disease, essential tremor, and spinocerebellar degenerations.2

                      The reason why mirror writing is usually carried out with the left hand has long been attributed to abductive arm movements being generally considered easier and better coordinated than adductive movements; leftward writing has therefore been held to be the natural direction of writing of the left-hander.1-2 Letters formed leftward would then result in the form of the script being mirrored, and this is the most usual explanation for reversal of letters such as b and d, although other letters such as s and N are also often reversed.

                      Various theories to account for mirror writing have been proposed, and these have been summarized elsewhere.2 They include:

                      1. The motor center hypothesis, in which it is postulated that there are motor programs in the brain, with the programs represented bilaterally but in mirror form in the 2 hemispheres. When the left hand carries out writing movements normally carried out by the right hand, it has been suggested that in mirror writing there is a failure to inhibit the natural left-handed tendency to write leftward and in mirror form.
                      2. The visual hypothesis, in which it is similarly envisaged that there are bilateral visual memory traces (engrams) in the brain, the nondominant (usually right) hemisphere engram being in mirrored form and again normally suppressed. Thus, when suppression is impaired or incomplete, mirror writing with the left hand would result. Conflict between abnormal motor pathways subserving mirror writing and a normal visual monitoring system has also been suggested.
                      3. The spatial-orientation hypothesis, in which it is suggested that there is confusion in respect of direction and orientation of reading and writing, sometimes associated with spatial confusion. These phenomena may merge with other related phenomena, including difficulties in overcoming the left-to-right directional bias of normal writing, right-left perceptual difficulties, different processing of writing in right and left hemispace, and access to mirrored graphemes when mirror writing is part of more complex mirror and perceptual phenomena.5
                      4. The involvement of thalamo-cortical circuitry. Rarely, mirror writing may be seen in essential tremor, Parkinson disease, and spinocerebellar disorders. It has been postulated that disruption of thalamo-cortical pathways may be the common underlying factor in these conditions.

                      Thus, there are both numerous circumstances in which mirror writing occurs and numerous theories invoked to explain the phenomenon, but the unifying feature is that mirror writing is nearly always carried out with the left hand. Furthermore, left-handers often find mirror writing particularly easy.2 We now report a new observation indicating that there is another group of individuals who have a particular facility for left-handed mirror writing.

                      New Insights

                      We have observed that a surprisingly large number of reported left-handed mirror writers are those whose native languages have traditionally been written and read leftward. This is evident from various individual reports of Japanese and Chinese patients, most of whom mirror wrote after (usually) left hemispheric vascular lesions, and the polyglot who, following head injury, selectively mirror wrote and read Hebrew script, while normal reading and writing of Polish remained.6

                      <more>

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                      • #12
                        My youngest is left handed writimg, catching baseball, but batted righthanded, shoots gun righthanded, it was interesting, we didn't force any manner of which way he wanted to go, just let him be natural.(Damn him! Of course he'd have to be lefty for baseball, I had to look far and wide in those days and pay more for good lefty gloves)

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