It probably helps if the nature of the text you have to type is somewhat formulaic.
It probably helps if the nature of the text you have to type is somewhat formulaic.
I mean, going only by lines of code written per day, one would think I would be content with being able to type only at maybe 8 words per minute, and that's on a good day! But it is obvious to anyone why being able to type only 8 words per minute can be detrimental to a programmer.
Most people who type "incorrectly" but have lots of practice can do 50-100wpm. That's my observation/experience, anyway. I don't touch type but I'm plenty quick enough. Is there a useful difference between that and 200wpm steno, for programming?
I'm talking plainly in terms of a null hypothesis, though. If we agree that there is a notable difference between 8 and 50 WPM, we should assume the effect also holds between 50 and 250 WPM, unless otherwise proven.
There is no reason to believe the "cutoff" value where the effect stops being noticable is at, say, 100 WPM, just because that happens to be a common Qwerty typing speed.