We assume that language is necessary verbal (i.e., comprising of words). That is why we say that children are verbal if they can talk (no matter that their verbal output is just a combination of echolalic phrases) and that they are non-verbal if they cannot produce verbal utterances. As the original experience of the world of autistic children is sensory-based, their original internal language (as a tool of formulation and expressing thoughts) consists of sensory-perceptual (