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Why do most people write with their right hand? Scientists solve the mystery

2026-05-21 20:24:39Lifestyle SHKRUAR NGA REDAKSIA VOX
Why do most people write with their right hand? Scientists solve the mystery
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The world around us seems designed for people to use their right hand.

From school desks to handshakes and everyday objects, almost everything serves the roughly 90% of people who are predominantly right-handed. However, the reason remains a scientific mystery.

A new study from the University of Oxford now comes with a possible explanation: right-handedness seems to be directly related to the evolution of the human brain and, above all, to the moment when humans began to walk upright.

Archaeological findings show that right-handedness has existed since the Neolithic period. Researchers have found that the preference for one hand is linked to certain areas of the brain that developed around the time humans began to walk on two legs.

Unlike humans, most primates exhibit a much more flexible use of the hands, without pronounced dominance of one side.

In humans, handedness begins in the womb and continues to develop into adolescence. Although there is a biological predisposition, scientists emphasize that environmental and developmental factors also play an important role. The more a person uses one hand from a young age, the more the body adapts, even creating changes in the strength, density, and shape of bones.

"It is the first study to simultaneously examine the main theories on right-wing dominance in humans," said researcher Dr. Thomas A. Püschel.

"Our results show that this phenomenon is linked to some of the characteristics that make us human, such as walking upright and developing a larger brain."

The study also found that primates with smaller brains and a less upright body posture have a more distributed use of the hands, in contrast to the strong dominance observed in humans.

Meanwhile, neuroscientists already know that using your non-dominant hand can activate new neural connections through neuroplasticity, the brain's ability to adapt and reorganize.

Studies have shown that when we consistently exercise with our "weaker" hand, the areas of the brain associated with movement and coordination are strengthened.

Experts also explain that each hand performs different functions. The dominant hand, for example, specializes in precision and fine motor control, while the non-dominant hand helps more with body stabilization and balance.


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