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Most people are right-handed, but scientists aren’t sure why. Some people prefer their non-dominant foot in sports, and have ocular dominance. Some animals also have laterality.
Most people are right-handed, between 70 and 90 percent, depending on which study results you accept. The other 10 to 30 percent are mostly left-handed or ambidextrous. Scientists aren’t really sure why people prefer one hand over the other, though theories range from genetic predisposition to trauma in the birth canal.
More facts about human laterality:
Right-handed people aren’t necessarily right-handed. Indeed, many right-handed people prefer their left foot when playing sports and vice versa.
People also have one eye they prefer over the other. This is called ocular dominance. Approximately two thirds of humans are right eye dominant and the other third are left eye dominant or experience no ocular dominance at all.
Humans aren’t the only ones with laterality; some animals also experience it. Many monkey species are right-handed or left-handed, and rabbits, frogs, and parrots also demonstrate “limb dominance.”
