Dr. M.K. Holder, a scientist in the Center for the Integrative Study of Animal Behavior at Indiana University, says. However, "handedness" has been studied for nearly 160 years, but there is no definitive reason. Over the past century, a lot has been learned about the percentage of humans that favor their right hand over their left or how rare "lefties" are. Your brain determines what hand you use most.

Why? That's the part Dr. Holder was pointing out we don't know. Right-handed people tend to be left-brain dominant and vice versa. They have learned that there are some surprising distinctions in people with a dominant right or left hand.

Below is are a few fun facts about what makes "lefties" unique and why "righties" can do certain things better. There are also side-by-side comparisons of the ability of a right-handed person vs. a left-handed person.

Whichever one you are, I have to hand it to the folks that put these experiments together. It's interesting stuff!

25 richest people in America and how they did it

Stacker compiled a list of the 25 wealthiest people in the country and how they've maintained their fortune.

More From News Talk 96.5 KPEL