Even though this is for autism awareness the same goes for apraxia. Don't ever assume that a person who is non-verbal can't hear you. Likely, they can and they may even be far more intelligent than you. Think before you speak.
Temple Grandin Quote << No one knew I was autistic as a child, my mother tried to explain to people 'she's shy'.I've never been shy, I think frustration over being misrepresented was what helped break my silence.
If your autistic child has a speech or language delay, chances are likely that their speech therapist will suggest several strategies to help with communication. For us the main strategy is PECS. But what are PECS, how do you use PECS, and are they really