There’s a stereotype that left-handed people are clumsier, but that might have something to do with the fact that they live in a world of objects optimized for the right-handed: scissors, the computer mouse, surgical tools, and guns, to name a few. The discrimination against the 12 percent of the population who are lefties has disarming historical roots. In the Middle Ages, left-handed writers were said to be the devil’s voice boxes, and the Jewish scholar Maimonides included sinistrality in his list of 100 imperfections that should preclude someone from priesthood.
“The prevalence of post traumatic stress disorder is almost double in left handers compared to right handers.”
People who watched an eight minute clip from a scary movie suffered more symptoms associated with post traumatic stress if they were left handed than if they were right handed, phsychologists find.
Transcranial magnetic stimulation can make you a leftie.
When performing simple tasks like pushing elevator buttons or picking up a cup, the brain actually has a mini-debate as to which hand should do the jobs. Now magnetic stimulation will make sure the brain always chooses the left hand.