Evaluation of a facilitator training program in a randomized controlled trial of psilocybin treatment for depression

Major depression is common among patients with life-threatening illnesses such as cancer, and it is associated with poorer adherence to treatment, lower quality of life, shorter survival and increased suicide risk. The paper argues that current pharmacological and psychotherapeutic treatments are often insufficient for this population, while psilocybin has attracted interest as a potentially useful intervention. At the same time, the researchers note that contemporary psilocybin trials place strong emphasis on preparation and integration sessions around dosing, yet there is little research on the psychotherapeutic support itself, including what skills facilitators need and how they should be trained. Morel and colleagues therefore set out to evaluate a facilitator training programme used within an ongoing randomised controlled trial of psilocybin treatment for depression. Their focus was on whether a 15-week training programme improved nurses’ knowledge, perceived readiness and verbal relational skills, with the latter assessed objectively using standardised role-plays and the relational components of the Motivational Interviewing Treatment Integrity system. The study is presented as an attempt to address a practical gap in how psilocybin-assisted treatment is delivered in clinical research.

The study evaluated nine nurse facilitators working across four sites in the CAPSI randomised controlled trial. The facilitators were mean age 37.4 years, most were women, and all had several years of experience as registered nurses. Eight held a bachelor’s degree and one a master’s degree. They completed a 15-week training programme combining online and on-site components before delivering support in the psilocybin trial. The researchers used two complementary evaluation approaches. First, they collected a subjective training evaluation developed for this study. This included anonymous free-text responses at the beginning of the on-site training about the online webinars, a second free-text evaluation at the end of the on-site workshop, and a final online survey one week after training ended. The survey asked participants to rate 13 items on a five-point Likert scale and answer five additional open-ended questions. Second, the researchers assessed verbal relational skills before and after training using two standardised role-plays of patient telephone calls. These role-plays modelled the first patient contact in the CAPSI trial, specifically booking the first preparation session. The role-plays were coded with the relational components of the Motivational Interviewing Treatment Integrity (MITI) code 4.2, which is a behavioural system for rating skills such as empathy, partnership and information giving. The extracted text indicates that inter-rater reliability was assessed using intraclass correlation coefficients from a two-way mixed model with absolute agreement, single measures. For quantitative analysis, the researchers used the Wilcoxon signed-rank test to compare pre- and post-training MITI scores. They also applied the Benjamini-Hochberg procedure to correct for multiple comparisons. The text indicates that effect sizes were examined alongside statistical significance, although not all statistical details are clearly reported in the extracted material.

In the subjective evaluations, most facilitators reported that the webinars had given them a broad overview of the study, improved their understanding of psilocybin and other treatment components, clarified their role as facilitators, and allowed practice of therapist skills and behaviours. When asked what they still needed from the on-site workshop, many said they wanted a better overview of the study and their tasks. In the final evaluation, the facilitators generally indicated that the online and on-site training had supported their knowledge and skill acquisition. For the objective assessment, the training led to a significant increase in one of the twelve MITI variables. Six measures showed medium-to-large pre-to-post effect sizes, but most outcomes did not reach statistical significance. The researchers attribute this, in part, to the small sample size, the non-parametric Wilcoxon test, and the multiple-comparison correction, all of which reduce statistical power. Behaviour counts generally trended upward, but there were no significant changes. Importantly, none of the facilitators used persuading or confronting behaviours during the role-plays, which the researchers note can damage the therapeutic relationship. Despite these gains, all MITI scores except Giving information remained low both before and after training. The extracted text suggests that the researchers considered this pattern potentially meaningful, while also acknowledging that it may reflect the assessment method rather than trainees’ actual clinical behaviour.

The authors interpret the findings as indicating that the training was at least somewhat effective. They argue that the subjective reports show facilitators felt the programme improved their understanding of the trial and of their role, while the role-play data suggest some strengthening of verbal relational skills. At the same time, they emphasise that the objective improvements were limited: only one MITI variable improved significantly, several others showed positive but non-significant trends, and overall scores remained low. Morel and colleagues place these findings in the context of earlier psilocybin research, which has largely focused on pharmacological efficacy rather than the psychotherapeutic support structure. They suggest that relational skills such as empathy and partnership may be especially important in psilocybin-assisted treatment, given the vulnerability and unpredictability of psychedelic experiences, and they present the training programme as a way to support those skills. The authors acknowledge several limitations. The sample was very small, which limited statistical power. The role-play method may have encouraged information-giving rather than empathic, collaborative interaction because participants were given written instructions and treatment information beforehand. Being recorded and assessed may also have influenced behaviour. They note, too, that standardised role-plays improve consistency but may lack ecological validity, meaning they may not fully reflect real clinical encounters. The paper’s implications are cautious. The authors suggest that more attention should be paid to facilitator training in psilocybin trials and that future work should continue to refine how relational skills are taught and assessed. The extracted text does not provide a more extensive set of practice or policy recommendations beyond this general direction.