Your dominant hand is made, not born, experiments suggest

Most people favor one hand, and that hand tends to be the better one for writing, throwing and managing chopsticks.

The long-standing view is that the dominant hand is "born" more capable, its skills rooted in a brain hemisphere specialized for motor control.

A new study in PNAS argues that this difference in skill is not innate at all.

It is the consequence of a lifetime of practice, and it surfaces only when we pick up a tool. ...