





Any signal of the child for example, stereotypic sounds or the movements the musical therapist perceives as intended and significant.
As a result the kid changes the relation to these signals.
For example, starts using them with the purpose to receive the answer.
The sound gains value of skill of communication useless action turns into the useful.
In the course of normal development of the child there is the same.
The kid who repeats paspaspaspas, at first does not mean father.
.