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David Horton

Department of Family Medicine and Community Health, University of Wisconsin, Madison, Madison, WI, USA.

3 papers in the library · 55 citations · publishing 2023-2025

Papers

Psychedelic-assisted psychotherapy: where is the psychotherapy research?

Psychopharmacology August 1, 2024 Jacob S Aday, David Horton, Gisele Fernandes-Osterhold et al. 39 citations

Psychedelic-assisted psychotherapy (PAP) shows promise for treating mental health conditions like substance use disorders and depression, yet the role of the psychotherapy component itself has received little empirical scrutiny. This review examines current debates over whether PAP involves full psychotherapy or merely psychological support, and summarizes existing clinical trial models and theoretical frameworks. It draws lessons from traditional psychotherapy research, advocating for standardized treatment manuals, clear provider eligibility criteria, measurement of established mechanisms of change, and optimized trial designs such as dismantling studies and comparative efficacy trials. The authors argue that PAP is a distinct, integrative, transdisciplinary intervention requiring further research into its psychotherapeutic components to inform best practices and federal guidelines.

A Field-Wide Review and Analysis of Study Materials Used in Psilocybin Trials: Assessment of Two Decades of Research

Psychedelic Medicine January 20, 2025 Marianna Graziosi, Gabrielle Agin-Liebes, Mary P Cosimano et al. 9 citations

Psilocybin and other serotonergic psychedelics are used in research settings with safety measures including controlled environments, staff presence, screening, and psychoeducation. An analysis of study materials from psilocybin trials over the past two decades found that psychoeducation documents varied but commonly emphasized biological and physical safety, psychological safety and well-being, aspects of setting, and the potential for expectancies. The materials prioritized biological and psychological safety across all sites. The authors also identified elements unrelated to safety that may contribute to participant expectancies and suggest these extrapharmacological factors be studied systematically to maximize safety while minimizing extraneous expectancies.

Psilocybin for Opioid Use Disorder in Two Adults Stabilized on Buprenorphine: A Technical Report on Study Modifications and Preliminary Findings

Psychedelic Medicine December 1, 2023 Julia Malicki, Amelia Baltes, Christopher R. Nicholas et al. 7 citations

A clinical trial found that giving psilocybin together with buprenorphine to people with opioid use disorder was safely tolerated and did not interfere with buprenorphine's effectiveness or psilocybin's subjective effects. The study faced feasibility challenges that required changes to the participant pool and eligibility rules, along with strategies to improve accessibility, reduce burden, and increase generalizability.