Keyboards, convention, efficiency and luck

When Christopher Sholes designed the QWERTY keyboard layout for early typewriters, it was partially to separate the keys of letters commonly used together and thus prevent key jams, which had a secondary effect of slowing down typists once key jams were no longer a problem.

But still, the QWERTY standard is seen on almost all English language keyboards even though it is not the optimal placement of keys. Rather than learn a new arrangement, like the Dvorak keyboard, most people prefer to stick with what they know. (The world’s record for fastest English language typing is held by Barbara Blackburn, using the Dvorak Simplified Keyboard. She had a peak speed of 212 wpm.)

So while most of the English language world uses a substandard keyboard layout what impact does this have on typists of other languages? Is it possible that some languages, purely by luck of letter frequency, use the QWERTY keyboard more efficiently than English language typists?

I looked at the languages for which I had data: English, French, German, Spanish, Esperanto (why not), Italian, Turkish and Swedish and mapped letter frequency to the QWERTY keyboard. A screen shot is below.

Doing a true comparison of keyboard efficiency in different languages calls for typing speed tests (of letter, not word speed), but lacking these data I made some assumptions. To compare the effect on different languages, I assumed that the Dvorak model was ideal and measured the degree to which the foreign languages followed that model of putting high frequency letters in the middle row and weighted to the right hand.

And the winner is… Esperanto. Yes, by chance, this artificial language should have a faster typing speed than the others. Losers in the speed contest are German and French, both of which have their highest frequency letters in the top row and to the left. That’s the power of convention and luck on efficiency, whether on keyboards or in business.

Then again, maybe we shouldn’t focus on typing fast but rather on writing thoughtfully and well…