Randomised, wait-list controlled pilot (n=12) testing two psilocybin sessions (20 mg/70 kg then 20 or 30 mg/70 kg) in professional religious leaders to assess psychological, spiritual and prosocial changes.
Randomised, parallel-group pilot comparing immediate versus delayed (wait-list) psilocybin intervention in professional religious leaders; primary outcomes include changes in psychological functioning, spirituality, well-being and prosocial attitudes.
Participants receive two oral psilocybin sessions (per 70 kg dosing: 20 mg first session; second session 20 or 30 mg) with preparatory meetings and extensive behavioural and psychological assessments at acute and follow-up time points.
Design permits pooling with a methodologically identical Johns Hopkins study to increase power; up to 86 screened to obtain 12 completers at this site.
Immediate participation: psilocybin sessions at weeks 5 and 9.
Per 70 kg: Session 1 = 20 mg/70 kg; Session 2 = 20 or 30 mg/70 kg; sessions at weeks 5 and 9.
Delayed participation (wait-list): psilocybin sessions at weeks 30 and 34.
Per 70 kg: Session 1 = 20 mg/70 kg; Session 2 = 20 or 30 mg/70 kg; sessions at weeks 30 and 34.