hearing voices

On the BBC news this morning they were showing footage of a homeless man being video recorded by the police.  In the footage the police officer asked the man if he was hearing voices, standard question they seem to use to identify mental health, which somewhat mystifies me.

Anyway I started to think what would my son's say if they got distressed in a public place.  Both have aspergers and I think  they would say "yes I do hear voices in my head"  but not realise the implication.  Their answer would be based on the fact that their auditory processing takes place inside their head so naturally they hear voices otherwise they would be deaf.

Has NAS ever done any work with the police to address this with the police, as aspies could find themselves sectioned erroneously.