There are several available manualized psychological group interventions for patients with a schizophrenic psychosis. One the is the "Integrated Psychological Therapy for Schizophrenia Patients (IPT)", it was developed and introduced into clinical practice almost 30 years ago. It combines neurocognitive and social cognitive interventions with social skills and problem- solving approaches, it has been extensively evaluated by several independent groups, in inpatient and outpatient settings as well, showing an overall improvement in participants.