Age

18–64

Sex

ALL

Healthy volunteers

Not accepted

Diagnosed with ICD-10 schizophrenia (DF20), chronic paranoid psychosis (DF22), schizo-affective disorder (DF25) or other non-organic psychosis (DF28-DF29)
Treatment resistance according to TRRIP criteria
Sleeping difficulties (minimum duration 3 months)
ISI score \>14
Stable psychopharmacological treatment the last month
Only legal competent patient can participant

Psychiatric admission last six months (more than 1 week or resulted in significant changes in psychopharmacological treatment)
Substance abuse to a degree that will interfere with participation.
Diagnoses of sleep apnea/CPAP use

Cognitive Behavioral Therapy for Sleep and Circadian Disturbances (CBT-I) in Treatment-Resistant Schizophrenia