Table 1: Symptom comparison.

Symptom typeSymptomsPre-NF training22nd-month follow-up

PositiveVisual hallucination70
Auditory hallucination91
False beliefs91~2
Distorted reasoning91
Disorganized speech90
Misinterpreted perception90~1

NegativeLimited facial expression90
No emotional and verbal communication80
Restricted body movement and gesture90
No motivation to initiate things80~1