Why Are People Left- (or Right-) Handed?

Up to 90% of people are right-handed. Scientists are still trying to figure out why lefties have always been in the minority.

Is handedness determined by genetics?: MedlinePlus Genetics

Why can't right handed people use their left hand effectively? - Quora

Is it possible to be both right and left brained? That is, being both right and left dominant depending upon your mood? - Quora

19 Left Handed vs Right Handed ideas left handed people, left handed, similarities and differences

Why are most people right-handed? - Quora

Why are some people left-handed and others are right-handed? - ABC Education

Why Are You Right or Left Handed?

19 Left Handed vs Right Handed ideas left handed people, left handed, similarities and differences

Why are some people left-handed? - Daniel M. Abrams

20 things you didn't know about being left-handed

PDF] Left-Handed People in a Right-Handed World

Why are some people left-handed? - Daniel M. Abrams