This commentary paper (pre-print) examines four common factors of psychedelic (healing) experiences and how those factors contribute, next to the molecules themselves, to the therapeutic effects. The factors are: 1) therapeutic relationship/alliance, 2) setting, 3) rationale/set, and 4) ritual.
Psychedelic-assisted treatment is at first glance markedly different in structure and approach from mainstream forms of psychotherapy in the West. A major criticism of clinical psychedelic research rests on the difficulty of executing placebo-controlled studies and distinguishing drug effects from those of the psychotherapeutic container in which psychedelics are typically presented. Detractors also tend to find fault in spiritual or mystical themes that often arise in the context of psychedelic use. Common factors theory of psychotherapy is a useful and extensively studied framework that can help make sense of these issues, and has much to contribute to our understanding of contextual effects that are often discussed in psychedelic literature as set and setting. In this paper we examine four major contextual common factors shared by various healing traditions-1) the therapeutic relationship, 2) the healing setting, 3) the rationale, conceptual scheme, or myth, and 4) the ritual. We explain how these factors show up in psychedelic-assisted treatment and how they may contribute to therapeutic effects. Lastly, we discuss implications of these factors for the concept of placebo, and for future research.
Papers in Blossom that reference this study
Santos, N. V. M., Silveira, C. F., Costa, C. G. D. S. S. et al. · Psychedelics (2026)
Henningfield, J. E., Barrett, F. S., Evans, S. M. et al. · Journal of Psychopharmacology (2026)
Ching, T. H. W., Stahnke, B., Shnayder, S. et al. · Frontiers in Psychiatry (2025)
Ham, R., Gardner, J., Carter, A. et al. · Brain and Behavior (2025)
Seybert, C., Schimmers, N., Silva, L. et al. · Lancet (2024)
Kettner, H., Roseman, L., Gazzaley, A. et al. · The American Journal of Geriatric Psychiatry (2024)
Aday, J. S., Horton, D. M., Fernandes-Osterhold, G. et al. · Psychopharmacology (2024)
Letheby, C. · Neuroethics (2024)
Macconnel, H. A., Earleywine, M., Radowitz, S. · OSF Preprints (2024)
Levin, A. W., Lancelotta, R., Sepeda, N. D. et al. · PLOS ONE (2024)
Gründer, G., Brand, M., Mertens, L. J. et al. · Lancet Psychiatry (2024)
Erritzoe, D., Timmermann, C., Godfrey, K. et al. · Nature Mental Health (2024)
Zeifman, R. J., Kettner, H., Ross, S. et al. · European Journal of Psychotraumatology (2024)
Weiss, B., Sleep, C., Beller, N. et al. · Journal of Psychedelic Studies (2023)
Buchborn, T., Kettner, H., Kartner, L. et al. · Frontiers in Neuroscience (2023)
Jaster, A. M., González-Maeso, J. · Molecular Psychiatry (2023)
Kamilar-Britt, P., Gordis, E. B., Earleywine, M. · Psychedelic Medicine (2023)
Noorani, T. N., Bedi, G., Muthukumaraswamy, S. · Psychological Medicine (2023)
Pronovost-Morgan, C., Hartogsohn, I., Ramaekers, J. G. · Journal of Psychopharmacology (2023)
Gold, N. D., Goldway, N., Gerlach-Houck, H. et al. · Biorxiv (2023)
Bennett, J. N., Blough, M. D., Mitchell, I. et al. · MedRvix (2023)
Sloshower, J. A., Skosnik, P. D., Safi-Aghdam, H. et al. · Journal of Psychopharmacology (2023)
Ponomarenko, P., Seragnoli, F., Calder, A. et al. · Journal of Psychopharmacology (2023)
Modlin, N. L., Miller, T. M., Rucker, J. J. et al. · Journal of Affective Disorders (2023)
Rabinowitz, J., Lev-Ran, S., Gross, R. · Frontiers in Psychiatry (2023)
Breeksema, J. J., Niemeijer, A. R., Kuin, B. et al. · Frontiers in Psychiatry (2022)
Gukasyan, N., Schreyer, C. C., Griffiths, R. R. et al. · Current Psychiatry Reports (2022)
Thal, S. B., Wieberneit, M., Sharbanee, J. M. et al. · Journal of Psychopharmacology (2022)
Henningfield, J. E., Coe, M. A., Griffiths, R. R. et al. · Neuropharmacology (2022)
Villiger, D. · Frontiers in Psychiatry (2022)
Strickland, J. C., Johnson, M. W. · Advances in Pharmacology (2022)
Aday, J. S., Heifets, B. D., Pratscher, S. D. et al. · Psychopharmacology (2021)
Williams, M. L., Korevaar, D., Harvey, R. et al. · Frontiers in Psychiatry (2021)
Johnson, M. W., Gründer, G., Betzler, F. et al. · Current Addiction Reports (2021)
Muthukumaraswamy, S., Forsyth, B., Lumley, T. · Expert Review of Clinical Pharmacology (2021)