Do you happen to have any reputable references for this? I'm truly curious. For years people have continually spread the idea that typing on an ergonomic keyboard could allow you to type faster but it seems like everyone spreading the message are people who heard it from others and/or just relaying the message without any real evidence that suggests so (or maybe I just never personally came across any).

I have friends who type in the 130-150 wpm range using a standard keyboard, and I myself border around 100, so its hard for me to believe that switching to an ergonomic keyboard naturally means it'll allow me (or anyone else) to type faster. As a matter of fact, I've tried years ago to get use to them purely for speed reasons and no matter what I did, my type speed decreased drastically. It was awkward and even after giving it a chance for a few weeks, I just gave up.

While I can agree with the wrist ailments it aims to solve, I often wonder if the type speed thing is a perception.

For the record, I briefly tried to Google something on the subject before writing a response here, and came up with nothing (admittedly didn't try too hard however). This thread sort of peaked my old interest in this speed typing debate if you will.