3Consider this example which shows the effects of compartmentalising a learner's abilities: Suppose a child produces a great deal of echolalic speech (others may even suggest that this demonstrates the presence of autistic features). Remediative efforts which concentrate on specific areas of speech and internal language of the child may be doomed to fail.
It may well be just as likely that the cause of the echolalic speech in this child is due to lack of opportunity for initiating communication. If you could not see another person, did not know if it was you or another being spoken to, had been asked closed questions (such as "Have you been out today?" Answer: "Yes" or "No"), in answer to which there is no means available for embellishing the answer through non-verbal means, all of these would conspire to make 'echolalia' a useful means for you to continue the social interaction.