Why are some people left-handed?

For the left-handed people of the world, life isn't easy. Throughout much of history, massive stigmas attached to left-handedness meant they were singled out as everything from unclean to witches. read more

For the left-handed people of the world, life isn’t easy. Throughout much of history, massive stigmas attached to left-handedness meant they were singled out as everything from unclean to witches. read more

Approximately 85 percent of people are right-handed. These theories also try to explain the persistent and continuing presence of a left-handed minority (about 15 percent of humans). The genetic proposal to explain hand preference states that there are two alleles, or two manifestations of a gene at the same genetic location, that are associated with handedness. read more

"Left-handed people have advantages in some sports and they can be more skilled in certain tasks as their brains are more plastic," she says, pointing to them having had to live in a world designed for right handed people. read more