Left handed which brain

Insider magazine pointed out tiny things that right-handed people often take for granted that are tougher for left-handers. The article points out that zippers, measuring cups, notebooks, credit card keypads and more are designed for the right-handed. Many of the psychological differences between right-handed people and left-handed people are likely the result of left-handers adapting.

Much of the things left-handers do differently are outcomes of necessity. Until recently, students were often forced to use their right hand to write in school, even when using their left hand made more sense to them. Today, we know that there is nothing wrong with being left-handed and understand that forcing children to change their handedness could have long-lasting adverse effects.

And, when we act against this disposition, it has consequences for concentration, cognitive performance , or, for example, on how well we can learn.

Education was not the only area that left-handed people were thought to be inferior. For much of history, left-handers were believed to be more prone to psychological problems and even physical injuries. More recent studies dispute this.

In fact, some studies show there are left-handed advantages. For example, according to studies , left-handed professional athletes may have an advantage over their right-handed counterparts, possibly because their movements are less predictable than that of their right-handed peers. Creative thinking is necessary when living life as a left-hander, which may lead to better adaptability and problem-solving skills in professional life. The article goes on to highlight that left-handed people can come up with multiple options for solutions to problems and often do not see things in black and white.

All of this means that left-handers have many reasons to feel special, for after all, the large majority of people are not left-handed. At the same time, bold claims about creativity and other ways in which left-handers may be super-gifted are probably not true.

Quite the contrary, it is also active, but less so than the left side. They differ from fraternal twins, who develop from different fertilizations and are only genetically related, like any other pair of siblings. Willems, R.

On the other hand: including left-handers in cognitive neuroscience and neurogenetics. Genetic influences on handedness: data from 25, Australian and Dutch twin families. Neuropsychologia —7. The developmental origins of laterality: fetal handedness. Development of hand preference for object-directed actions and pointing gestures: a longitudinal study between 15 and 25 months of age.

Infant Behav. Cerebral lateralization of face-selective and body-selective visual areas depends on handedness. Cortex — Body-specific representations of action verbs: neural evidence from right- and left-handers. Embodiment of abstract concepts: good and bad in right- and left-handers. Body-specific motor imagery of hand actions: neural evidence from right- and left-handers.

Lefty or Righty? A new hold on how we think. This idea that each hemisphere is specialised for some skills is known as brain lateralisation.

However, the halves do not work in isolation, as a thick band of nerve fibres — called the corpus callosum — connects the two sides. Interestingly, there are some known differences in these specialities between right-handers and left-handers. It was assumed that the opposite would be true for lefties. But this is not the case. Why this number is lower, rather than reversed, is as yet unknown.

Many of these are specialised in the right hemisphere — in most right-handers at least — and include things such as face processing, spatial skills and perception of emotions. In fact, this assumption, plus the recognition that a small number of left-handers have unusual right hemisphere brain dominance for language, means left-handers are either ignored — or worse, actively avoided — in many studies of the brain , because researchers assume that, as with language, all other asymmetries will be reduced.

A study in the Journal of the Indian Academy of Applied Psychology found that, out of subjects, left-handed participants were significantly more likely to perform better on an intelligence test than right-handed people. Right-handers also took more time to complete the test. Another study in the journal Brain in revealed that there are genetic differences between left-handers and right-handers.

Examining data on about , people, scientists discovered that the left and right hemispheres of the brain were better connected and more coordinated in regions involving language in left-handed people. Handedness , or hand preference, is the tendency to be more comfortable and skilled when using one hand over the other to perform tasks.

While right-handedness and left-handedness are well-known, there are also some less common variations, including:. Researchers believe hand preference may have to do with the developmental differences between the right and left hemispheres of the brain.

The right hemisphere controls movement on the left side of the body, while the left hemisphere controls movement on the right side of the body. Recent studies have also suggested that multiple genes, maybe even close to 40, are related to hand preference. Children of left-handed parents are more likely to be left-handed than children of right-handed parents.

But because lefties are comparatively rare, most children of left-handed parents are right-handed. Cultural influences, environment, and prenatal exposures may also play a role in determining handedness. In psychology, for instance, intelligence may be described as possessing one or a combination of the following attributes:. There are different theories of intelligence and ways to measure it, including the well-known intelligence quotient IQ tests.

Some research has shown lefties may be more likely to develop certain conditions , including:. Research shows left-handed people may have a lower risk of developing ulcers and arthritis.