I hope so.

The guy doing the assessment sounds very knowledgeable.

I agree with the doubt thing. In Recovering Sanity he talks about doubt. In his chapter on John Thomas Perceval, he describes how Perceval - whose psychosis was of a religious nature - deliberately suppressed doubt and drove himself further into psychosis. He believed that if he doubted, it was a sign he wasn't religious enough. I've talked to my son about it. He says that when he was in his most recent psychosis, he did experience doubt about the truth of his delusions. Anyway Perceval was able to pull himself out of psychosis - while living under horrific conditions in a 19th century madhouse - by deliberately clinging to doubt. In a way he devised his own CBT - questioning his delusional beliefs and defying his voices.