LEFT vs Right

LEFT vs Right Part 2

                                                                           Left handers day

The left handers day is celebrated 2 days before India's independence day i.e on 13th august.On 13th August 1992 the Left Handers Club launched International Left-Handers Day, an annual event when left-handers everywhere can celebrate their sinistrality and increase public awareness of the advantages of being left-handed. This event is now celebrated worldwide, and in the U.K. alone there have been more than 20 regional events to mark the day in recent years – including left-vs-right sports matches, a left-handed tea party, pubs using left-handed corkscrews where patrons drank and played pub games with the left hand only, and nationwide "Leftie Zones" where left-handers creativity, adaptability and sporting prowess were celebrated, whilst right-handers were encouraged to try out everyday left-handed objects to see just how awkward it can feel using the wrong equipment.

These events are celebrated greatly creating a left handed zone where right handers are made to use everyday left hand products as left handers do (these products are separately manufactured) and thus right handers experience how left handers felt awkward in a biased world. These events are supported by left handers club they provide many left handed items like scissors spiral notebooks zippers etc.

"It is clear by researches that left handers Recover from strokes faster."

                                                                       

                                                                            The Origin of left handers

Lefties are also called south paws. The Origin of the south paws takes us back to the past and we connect it to the present. Today about one tenth of the worlds population are left handed archeological evidences show that it has been that way for as long as 500,000 years, with about 10% of human remains showing the associative differences in arm length & bone density. Some ancient tools were also designed for lefties which were examined while excavations. Those tools which were found were artefacts showing the left hand use. Evolution has produced them in just this ratio and maintained it over the course of millennia. Despite many years of research, the reason why one person turns out to be a left-hander and another does not, remains a mystery. Studies that compared identical twins to fraternal twins show that the heritability is around 25%. Identical twins develop from the same fertilisation and therefore share virtually all of their DNA. They differ from fraternal twins, who develop from different fertilisations and are only genetically related, like any other pair of siblings. Regarding the heritable factors, researchers have found several genes which may be involved in handedness. Interestingly, it seems that there is not one gene which contributes to determining whether people are left-handed or not. Most likely, different genetic influences are involved. Foetuses like to move around, and one can predict a child's hand preference reasonably well by looking at which arm and hand they prefer to move before birth, as can be seen with ultrasound scanning. This observation of fetal handedness is at odds with the finding that some children seem to switch their hand preference, at least up to the age of 2. Perhaps some people are left- or right-handed at birth, whereas others develop their preference later on, during the first years of life. Left-handers are distinct from right-handers in that they tend to have less lateralisation in the brain. A similar example comes from face perception, which is rightward-lateralised in the majority of people, meaning that mainly right-sided parts of the brain are responsive to faces. Again, left-handers tend to use both left and right regions of the brain relatively often when they see a face. Now the discussion in detailed manner is given below.