While many left-handers never learn touch-typing, they tend to be faster typers on average than right-handers. Think of where the most common letters are placed on a QWERTY keyboard. You'd be forgiven for wondering if a left-hander invented it because more than 3000 words can be typed using just the left hand, while only about 300 words can be typed using only the right hand. This may have something to do with why lefties tend to be speedier typists on QWERTY keyboards. However, the less common Dvorak keyboards favor right-handers.