Sko í gamla daga( á tímum heimsku og fáfræði) var það að vera örvhentur talin vera fötlun og börn sem vöru örvhent voru barinn þangað til þau skrifuðu með hægri og stundum var vinstri hendin þeirra bundin bakvið bak þangað til þau skrifuðu “rétt”.
Hins vegar er það eingin fötlun og sá einstaklingur sem heldur því fram að það sé fötlun er í senn fáfróður og heimskur að halda því fram.
Það sem hins vegar margir hafa haldið fram er að örvhent fólk sé gáfaðra en rétthent og vísa í það að mörg að mikilmennum jarðar hafi verið örvhent eins og til dæmis Friedrich Nietzsche, Alexander mikli, Julius Caesar, Albert Einstein, Ivan Pavlov, Nikola Tesla o.s.frv.
Sumir segja þetta bara vera goðsögn en margir virtir vísindamenn eru ósammmála
"In his book Right-Hand, Left-Hand,[19] Chris McManus of University College London, argues that the proportion of left-handers is rising and left-handed people as a group have historically produced an above-average quota of high achievers. He says that left-handers' brains are structured differently in a way that widens their range of abilities, and the genes that determine left-handedness also govern development of the language centers of the brain.“
eiinig er mjög athyglisvert að lesa þetta hérna en vísindalega tilraunir hafa sýnt að flestir örvhentir hugsa öðruvísi en rétthentir sem fræðilega veldur því að þeir eiga að geta hugsað hraðar og ”multi-taskað“ það er að segja þegar þeir eru að kljást einhvað vandamál þá taka þeir ekki einn hlut í einu og skoða hann heldur en vinna þeir úr nokkrum hlutum í einu og sjá heildarmyndina betur.
”According to this theory, right-handed people are thought to process information using a “linear sequential” method in which one thread must complete its processing before the next thread can be started.
Left-handed persons are thought to process information using a “visual simultaneous” method in which several threads can be processed simultaneously. Another way to view this is such: Suppose there were a thousand pieces of popcorn and one of them was colored pink. The right-handed person — using the linear sequential processing style — would look at the popcorn one at a time until they encountered the pink one. The left-handed person would spread out the pieces of popcorn and visually look at all of them to find the one that was pink. A side effect of these differing styles of processing is that right handed persons need to complete one task before they can start the next. Left-handed people, by contrast, are capable and comfortable switching between tasks. Left-handed people may have an excellent ability to multi-task. Perhaps the anecdotal evidence that suggests they are more creative stems from this ability to multi-task.
Right-handed people process information using “analysis”, which is the method of solving a problem by breaking it down to its pieces and analyzing the pieces one at a time. By contrast, left-handed people process information using “synthesis”, which is the method of solving a problem by looking at the whole and trying to use pattern-matching to solve the problem. [3] Ultimately, being left-handed is not an all-or-nothing situation. The processing styles operate on a continuum where some people are more visual-simultaneous and others are more linear-sequential. This can be further explained in the use of computers. A computer processor can only process one piece of information at a time, regardless of how many tasks you may be running. But a computer with (for example) four processors; each processor still only processing one piece of information each but four pieces at once making the processing of information faster. In this sense, a right handed person can only process one piece of information at a time would in theory think more slowly than a left-hander who can process (for example) four pieces of information at a time. Also, it is very difficult to ascertain the way a human being behaves within the black box that is the brain. Whether this theory about processing styles is valid or not will be borne out by future experimentation."
http://en.wikipedia.org/wiki/Left_handed