Both left-handedness and breast cancer are affected by sex hormones, and some studies suggested a link. Others, however, did not. A meta-analysis weighed the evidence.

A recent study suggests that left-handed people have an advantage in competitive contexts, while righties tend to cooperate ...

A study reveals that left-handed people show greater competitive drive than right-handed people, which could give them an advantage.

Why are 90% of people right-handed and 10% left-handed? A modification of the well-known fighting hypothesis aims to explain this pattern.

Add Yahoo as a preferred source to see more of our stories on Google. Approximately 10.6 per cent of people are left-handed, ...

We’ve all heard the whispers. Those southpaws among us supposedly have some kind of secret intellectual edge. From Leonardo da Vinci sketching with his left hand to Einstein supposedly jotting down ...

Being right- or left-handed is a familiar fact about yourself you likely don’t think about much on a day-to-day basis. However, your handedness affects how you interact with the world. For many people ...

Aside from their philanthropy, popularity and all-around inspiration, they're also all left-handed. So if you're a lefty, give yourself a round of applause. Friday, Aug. 13, is a great day to be a ...

Add Yahoo as a preferred source to see more of our stories on Google. Having a hand preference speaks to more than just your preferred way to write. Domingo/iStock via Getty Images Plus Being right- ...