Handedness does come with certain physiological and neurological differences. Research remains incomplete, but here are some things we know about the unique cognitive and psychological profiles of the left-handed. Lefties historically have had a tendency to get left behind. Until relatively recently, being left-handed was stigmatized, sometimes as an abnormality or sign of weakness.
Left-handed children were forced to learn to write with their right hands, often to their significant disadvantage. Lefties have comprised roughly 10 percent to 15 percent of the general population for many thousands of years. The fact that the trait has remained stable over many generations suggests that left-handedness is not an evolutionary weakness, as many psychologists of the past believed. Lefties have comprised roughly 10 percent to 15 percent of the general population for many thousands of years.…
