Cognitive behaviour therapy (CBT) is now the psychological treatment of choice for psychosis but meta-analyses indicate a low effect size on delusions, so further innovations are clearly needed, and group CBT for psychosis (GCBTp) is an under-researched area. This study aimed to service-evaluate the feasibility, satisfaction, safety, and effectiveness of a CBT group specifically targeting medication-resistant single delusions in early psychosis patients (EI-GCBTp). Three separate EI-GCBTp groups were run resulting in a total of 11 medication-resistant early psychosis patients. A within-subjects design tested for group change across two time points: pre-baseline (4 weeks before treatment) to baseline (session 1 of treatment) and sessions 1–8 (the treatment period). Thirteen delusion dimensions were measured from three psychosis-specific questionnaires: The Psychotic Symptom Rating Scale (PSYRATS), Characteristics of Delusion Rating Scale, and the Belief Rating Scale. At least three patients attended each group, satisfaction scores were high, and no harm to patients was identified. With reference to effectiveness, the pre-baseline period showed virtually no change. In contrast, across the EI-GCBTp treatment period, the PSYRATS total demonstrated a statistically significant decrease in delusional severity (p < 0.01), a 31% symptom reduction, and a large effect size (Cohen's d = 1.2, 95% confidence interval = −2.53 to 0.05), statistically significant across four delusion dimensions. EI-GCBTp appears feasible, acceptable, safe, and preliminary uncontrolled effectiveness results suggest merit for larger-scale more rigorous testing of this treatment format for possible dimensional improvements of persistent delusions.

Objective – To describe a preliminary evaluation of a group CBT approach which has been fully integrated into the routine care for acute psychotic inpatients, admitted to a typically overburdened inner-city psychiatric general hospital unit. Design – The design is pre-post. A comparison of some indicators between the years preceding (1997) and following the beginning of the group therapy (1998) has been carried out. Setting – Psychiatric ward of S. Filippo Neri in Rome, in 1998. Method – The study compared the rate of rehospitalization, the rate of compulsory admission, the use of physical restraints, the episodes of violent behaviour and the escape from the ward. During the last three months of 1998 patients' satisfaction was also measured. Results – Overall 385 patients attended the group therapy, 79% of all inpatients in the period, with an average number of 4 sessions per patient. 59% of participants in the group in 1998 had a diagnosis of schizophrenia or paranoid disorder. The total compulsory admissions declined by 1/3 (p>0.001), the «revolving door» patients declined by 1/3 (p<0.05), compulsory admissions in «revolving door» patients declined by 3/4 (p<0.005), violent episodes by almost half (p<0.001), physical restraints and patients escape from the ward almost disappeared. Patients' opinion about the participation to the group was excellent. Conclusions – It is likely, but not sure, that the improvements were directly attributable to the introduction of the group treatment. Moreover, the group was clearly found to be useful by the majority of the participants. Some asked for further help of this type on discharge. These preliminary results are promising and make us confident they will act as stimuli for other colleagues to implement and evaluate this approach in other settings.