Why Are So Few People Left-Handed?

Today marks the 22nd annual International Left-Handers Day. To celebrate, let's look at why only around one in ten people is left-handed. Why, pray tell, are lefties are so rare – or, said another way, why are most of us righties? It seems like a simple question, but it's actually one of the biggest mysteries in all… » 8/13/14 12:20pm 8/13/14 12:20pm

Why are most people right-handed?

It seems like such a simple question, but it's actually one of the biggest mysteries in all of science. Is it because of how our brains are organized, how ancient humans gripped tools, or is it simple anti-lefty prejudice? » 10/26/11 9:28am 10/26/11 9:28am

Is being left-handed actually a form of cognitive impairment?

That's the finding of a new study examining the link between cognitive ability and handedness. Lefties score consistently lower on aptitude tests than righties, and left-handedness is cognitively equivalent to being born prematurely. Yeah...this one's going to be controversial. » 6/08/11 4:00pm 6/08/11 4:00pm

Ambidextrous people are easier to manipulate than right-handed people

About 90% of people use their right hand for almost all activities, while the remaining 10% is split between the left-handed and the ambidextrous, people who use either hand with equal comfort. But these "inconsistent-handers" pay a price for their ability to use either hand - a truly bizarre study has discovered that… » 2/21/11 1:30pm 2/21/11 1:30pm