Student 107's List: SPF 2011

• • In this article it only talks about how hard life is being left handed because we live in a right handed world. Where most things are created for right handed people. It never talked about lefties have many advantages.
• Generally, the survey found that about 10 per cent of people were left-handed
• Lefties have been stigmatised for years, linguistically, culturally and even biblically - in the Bible, those favoured sat at God's right hand.
• left-handed people faced countless problems in a world that favoured the right-handed majority.
• Unlike right-handed people, when lefties want to write something from left to right, our hand smudges across the board or paper as we write
• supported the idea that earlier generations were forced to use their right hand at school. Use of the left hand was, once upon a time, taboo, and punished - which left a lasting impression on older generations.

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• • This article talks about how there aren't very many disadvantages to being left handed. It also talks about how the brain is split into two hemishperes and one hempishere controls the other side of the body. This determines weather you are right or left handed. 
• About 10% of people are left-handed. Males are about twice as likely to be left-handed than are females.
• Left-handedness is related to the brain, not the hand. It is not just a habit. There is no great disadvantage to being left handed. Many famous and successful people throughout history were left handed.
• Left-handedness is more common in children with who have had injuries to the right side of the brain, just as right-handedness is more common in children with left-sided brain injuries. If you have concerns, have your child checked by your healthcare provider.

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• In biology, this phenomenon is known as "lateralization." It is the preference for doing or perceiving things more with one side of the body than the other
• Like many structures in the body, the brain is "bilaterally symmetrical." It is made up of two halves -- called "hemispheres" -- divided by a plane that makes one the mirror image of the other.
• • This means that the brain is not different from the structure of the different hemispheres. They are strictly different in function. 
• The brain's asymmetry is primarily in function, not structure (although careful measurement shows that certain regions are bigger on one side than the other in nearly everyone). The most dramatic example involves language.
• What determines whether a person is right- or left-handed is not really known, although it seems to be a combination of genes, environment and culture.
• • This tells me another disadvantage, weather it is true or not. But saying they are better fighter also tells me an advantage. Fighting is a physical activity so, Why exactly are the better fighters? Is it because they are more ambidextrous? 
• Left-handed people are more likely to die from accidents.
• Lefties do better in fights.
• The low prevalence of left-handedness everywhere suggests that the advantage holds only when lefties are rare, preserving their unfamiliarity and ability to surprise.

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• It is defined as that force necessary to provide a mass of one kilogram with an acceleration of one metre per second per second

• • In this article they talk about the advantages of being able to use both hands equally. This is what i'm studying, do left handed people have more of an advantage because they are more ambidextrous? 
• Ambidexterity is the ability to use both your hands with equal ease or facility
• In fact, it is quite advantageous in certain sports and martial arts to be able to use both your feet with equal facility.
• Many musical instruments are played ambidextrously, and many athletes are adept at using both of their hands.
• Become ambidextrous and along with an added physiological brain growth, a more balanced integration of your 2 hemispheres will be achieved.

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• Learning to write may be more difficult for left-handers than for right-handers for a number of reasons. Our culture’s left-to-right progression favors right-handers. It is easier to pull a pen or pencil across a page than to push one. (If you are right-handed, try using your left hand to experience the increased difficulty.) Then, as the left hand moves across the page, it not only covers what has been written, but may smear the ink or pencil marks as well. The spiral binding or rings on a notebook get in the way. Even the desk itself may be a hindrance if the lefty is sitting in the old-fashioned right-handed school desk.
• • This states mean reason why it is harder for left handed people to writing. Could those reasons have an effect on there pinching strength, which will reflect their pencil holding?
• In grasping the pencil, the forearm should rest on the writing surface in a neutral position, with the hand resting on the little finger. This position allows the wrist to move freely. The wrist should be in a slightly extended posture (bent back), because this brings the thumb in a position where it can comfortably oppose the fingers. There should be a rounded, open web space between the thumb and fingers. This position permits freedom of movement through all finger joints and also allows the finger pads to contact the pencil shaft.

• Correct pencil grip for left-hander

  Have the child use a hard lead pencil, such as a Number 3 instead of a Number 2, so that it will not smear easily. Primary or oversized pencils are not necessarily better for the left-handed child. In fact, the larger size may actually impede some children with small hands.

   

  In grasping the pencil, the forearm should rest on the writing surface in a neutral position, with the hand resting on the little finger. This position allows the wrist to move freely. The wrist should be in a slightly extended posture (bent back), because this brings the thumb in a position where it can comfortably oppose the fingers. There should be a rounded, open web space between the thumb and fingers. This position permits freedom of movement through all finger joints and also allows the finger pads to contact the pencil shaft.

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• • These techniques look relatively similar from right handed people to left handed people. 
• Your grip should be light yet supportive, and there should be no undue tension in your hand. Don’t squeeze – your pen is no more a tube of toothpaste than it is a weapon, and the ink will flow of its own accord.
• It doesn’t really matter which fingers you use to hold the pen, as long as it feels comfortable and balanced. But it’s best for the top (the non-business end) to rest on or just in front of the base knuckle of your index finger, rather than in the gully formed between index finger and thumb. (See the photo above.)
• You need to sit up straight yet relaxed, with your non-writing fingers gently curled under your hand, and your hand and wrist resting lightly on the table.
• writing surface at a 45 degree angle

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• • This article talks about not right handed and left handed people but strong hand and mix handed people. It says that mix handed people have a bigger corpus callosum which makes it easier to bundle nerves that link the two hemispheres of the brain together. This being said doesn't it make sense that "left handed" people are better with both their handed compared to right handed people?
• He says it is not being right or left-handed that matters, but the strength of your preference for one hand over the other
•   According to his controversial idea, people are not either left-handed or right-handed but “strong-handed” or “mixed-handed”.
• people who exclusively use one hand for tasks like writing, eating, brushing teeth and throwing a ball make up one distinct group – the strong-handers.  Mixed-handed people, in contrast, may favour one hand for primary functions like writing and eating, but demonstrate mixed preferences for other tasks.
• Much research has been done to explore the theory that left-handed people have a larger corpus callosum – the cable like bundle of nerves that links the two hemispheres of the brain – than right-handers, and it has been suggested that handedness is simply a signal as to the size of the corpus callosum.
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