Why can’t my child speak? It was estimated that about one third (Bryson 1996) to one half (Lord & Paul 1997) of autistic people never develop any functional speech: they are functionally mute. More recent research estimates of the proportion of children with ASD who have been classified as minimally verbal vary from 25% to 35%. What is it like not being able to talk? People who have never experienced this will go through life never knowing how soul crushing the condition of w