I am a child neurologist and I have children. And the elderly at one time had a delay in speech development, until the age of 3 he was generally silent, then already on the background of drugs spoke.
I was silent for five years. Parents paid off, led to psychiatrists-psychologists-logopedists... And the salt in what I knew how to speak, I just didn’t want to. I don’t remember the motive, but it was. As in the anecdote "and before the meat was not salted".