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Studies in the U.K., U.S. and Australia have revealed that left-handed people differ from right-handers by only one IQ point, which is not noteworthy ... Left- handers' brains are structured differently from right-handers' in ways that can allow them to process language, spatial relations and emotions in more diverse and ...


Sep 12, 2013 ... What makes humanity's bias against lefties all the more unfair is that left-handed people are born that way. In fact, scientists have speculated for years that a single gene could control a left-right preference in humans. Unfortunately, they just couldn't pinpoint exactly where the gene might lie. Now, in a paper ...


Researchers who study human hand preference agree that the side of the preferred hand (right versus left) is produced by biological and, most likely, genetic causes. The two most widely published genetic theories of human hand preference argue that evolutionary natural selection produced a majority of individuals with ...


Feb 20, 2017 ... Scientists have long assumed our preference to be right- or left-handed stems from asymmetries in the brain, but it's actually the spine that defines this.


Apr 28, 2015 ... Left-handed people, as a result of this asymmetry, also have larger corpus callosum – a thick band of nerve fibres in the brain that divides the left and right hemispheres of the cerebrum. This part is actually 11 percent - or 25 million nerve fibres - larger in lefties, and causes communication between their two ...


Jan 4, 2018 ... Scientists think they have found the reason some people are left-handed — and it has nothing to do with the brain ... colleagues from the Netherlands and South Africa — found that gene activity in the spinal cord was asymmetrical in the womb and could be what causes a person to be left- or right-handed.


Researchers believe that our handedness (tendency to be right or left-handed) is determined in the womb. The majority of humans are right-handed (a whopping 85-90%) and this makes sense– our right hand is controlled by the left hemisphere of the brain which is responsible for speech and writing. The right hemisphere ...


Aug 20, 2015 ... What causes someone to become a southpaw? Scientists aren't exactly sure, but research points to a complex collaboration between genes and environment. While no exact set of “leftie genes” have been discovered, people who dominantly use their left hands do have more left-handed family members.


Most people who have studied left-handedness believe that approximately 10 percent of the people in the world are left-handed. ... Luckily, there are now more manufacturers who make special left-handed versions of many items. Left- handers ... If you're right-handed, that means living like a left-handed person for an hour.