Oh yes, I know this one very well. The majority of our spellers never show they have the ability to do this until we teach them the motor. Try this experiment on yourself: Tape your mouth shut and tie your hands behind your back. Can you still think? Of course. Can you still read? Of course. Okay but how would anyone know that?
With apraxia reading, listening, and paying attention don’t have a look.
But don’t take my word for it, I refer you to one of the experts. See this excerpt from self-advocate non-speaker, speller and author Aaron Jepson
“I think most of us non-speakers figure out on our own how to read and spell long before we can actually teach our bodies to cooperate. That is why it is so important to assume competence and teach to our age level. It would avoid so many wasted years and a lot of frustration. I am proud to be part of a group of people who have shown such life resilience and am so happy that many of us are finding our voices. Hopefully by making our voices heard, things will be better for those behind us.”
We start by presuming competence and go from there. It’s the least dangerous assumption.