In my class my students communicate in different ways. But one thing I don’t have my students do is rely on speech to communicate even if they can say anything reliably with speech*. The reasons are
- Sometimes repairing can be difficult with speech
- Speech can make more misunderstandings then otherwise
- Other ways of communication can be better even if it doesn’t appear to be that way
- If you only use speech you may not recognize minimally** and unreliablly*** speaking people
Even if it seems a waste it is best to provide people with another means of communication. For more on this see
niederfamily.blogspot.com/p/aac-siblinghood-our-communication-story.html
*I would like to note that by speech I mean the motor movements used make words come out of the mouth.
**Minimally speaking is when someone may be able to speak some words and phrases but not speak well enough for robust and felxible communication.
***unreliably speaking is when someone can not speak purposefully.