The classic classification of people in left and right half seems to go by the core of the thing
Whether someone is in the school left or right-right, it makes a clear difference, even if no one was looking for the idea to rewrite a left hand. However, more decisive than the preferred brain hemisphare seems to be the cross-bond of the two brainshares: Whoever uses both hands in the day life, is more creative, but lighter distractable.
People in which the brain is very strictly wired, can react safer in complicated situations, but they are artist less creative than those who even taste colors horns or tones (the small sixth tastes like cream). In doing so, the brain in man uses functions not symmetrical true: for example, speech recognition on the left ear is better, while the musical vein right is more pronounced. So that most people hold the phone horian in the left hand, so not it is because they need the right hand to write: Even with private speeches where nothing is not to be noted, one will not take the Horner in the other hand.
Investigations on the differences between left and right hikers have brought little insight in the past. Psychologist Stephen Christman From the University of Toledo in Ohio, USA, in the current New Scientist says that this is because the false questions have been asked all the time: whether someone uses the left or right hand, is not really crucial, well But if someone always uses the same hand or ever changed and the weaker hand used to open a mason jar or brush the teeth.
It is clear that almost everyone has a preferred hand. This is also the case with animals: Again, there is a preferred hoof, claw or paw. However, in most species, the left-right distribution is statistically 50:50, during people only 10 to 12% links to be found. In 1972, Marian Annett from the University of Leicester from England gave the genes to blame the genes: as speech recognition hiked on the left side, the craftsmanship shifted in the course of generations to the rights.
Left and right? Not really matter.
Christman has now set up a new classification. The cause was a research series of 1985 of the Neuroscientist Sandra Wittelson of the McMaster University in Hamilton, Ontario, Canada, who stated in the study of brain-died left and right-handed the former a thicker Corpus Callosum had – the bundle of nerves connecting the left and right side of the brain.
In the early nineties, Christman was also interested in the Corpus Callosum, but he was to determine whether differences in his coarse played a role in playing special musical instruments. For this he examined musicians who played either string instruments, keyboard instruments or drums and tried to find out their preferred hand. He had expected that among the musicians who played stringed instruments were found above average, because they need both hands to play and thus have a coarse Corpus Callosum. The drumbs and keyboard players should have a small Corpus Callosum, as they had to play with the left and right hands often independently of each other. Here he expected more right-handed.
The expected assignment of left and rights for musical instruments proved to be a total mistake. However, however, was the assignment of musicians who both had to use both hands or cooperating together, on the corresponding musical instruments. And in fact, only two to three percent of the population are determined completely on one of the two theme – some who is considered left hand, is only one hundred percent right-hand.
The mix makes it
A typical test, with which one can measure the connectedness of the two brain hemisphares during the lifetime of the examination objects are cards labeled with a word in a color, but the word itself refers to a different color – for example the word "yellow" in Gruner Scripture. The tested should call the color of the font here, not the wording. The speech recognition is in the left half, the color recognition, on the other hand, right. Persons in which both brainholes are highly interacting, here are a disadvantage: the opposing message of text and color confuses them. Even when car driving, you also undermine errors, for example, in the simultaneous telephony (left brainshoors) and taxes (right brainshoors). The advantage is the strong double-sided people, on the other hand, in memory services: Memories are created in the left braindoats, in the right-hand retrieved.
Overall, the differences are not so much, but Chris Nieauer, a Schuler of Christman, who today teaches at the Slippery Rock University in Pennsylvania, USA, that "Double Handy" is less likely to believe in creationism, rarely homophobic, but are often hypochondrish.
There is now a risk that popular errors can be skipped, such as the – non-applicable – classification of people in logical left thinkers and creative legal thinkers. Whoever grasps a glass with the left hand to classify goods as creative drinkers…
The author of the New Scientist article, David Wolman, is UBERGE itself left hand and has just written the book a left-hand turning Around the World.