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Jeffrey Guss

21 papers in the library · 3,398 citations · publishing 2016-2026

Papers

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Psychodynamic Perspectives on Psychedelic States and Treatment Contexts: A Conceptual and Clinical Introduction.

Psychodynamic psychiatry June 1, 2026 Nadav Liam Modlin, Zsofia Elek, Carolina Maggio et al.

Recent clinical trials have suggested the safety and efficacy of psychedelic therapy for treatment-resistant depression, posttraumatic stress disorder, addiction, and end-of-life distress. While neurobiological mechanisms such as 5-HT2A receptor activation, increased neural entropy, and default mode network modulation have been well-characterized, significantly less attention has been given to...

A model training curriculum for psychedelic, psycholytic, and entactogen-assisted psychotherapy.

Journal of psychopharmacology (Oxford, England) June 10, 2025 Torsten Passie, Anja Loizaga-Velder, Alicia Danforth et al. 4 citations

The authors offer a model for curriculum for education and training in substance-assisted psychotherapy (SAP), that is, psychedelic, psycholytic, and entactogen/MDMA (3,4-methylenedioxymethamphetamine)-assisted psychotherapy, addressing both the detailed contents of training and the question of experiential training. All authors of this model have an abiding interest and extensive experience in...

An international Delphi consensus for reporting of setting in psychedelic clinical trials.

Nature Medicine June 3, 2025 Chloé Pronovost-Morgan, Kyle T. Greenway, Leor Roseman et al. 26 citations

Psychedelic substances exhibit complex interactions with the 'set and setting' of use, that is, the mental state of the user and the environment in which a psychedelic experience takes place. Despite these contextual variables' known importance, psychedelic research has lacked methodological rigor in reporting extra-pharmacological factors. This study aimed to generate consensus-based...

Successful treatment of intractable MDMA adverse reactions using acupuncture and traditional Chinese medicine

Journal of Psychedelic Studies April 2, 2025 Hope Kronman, Alison Locker, Abdi Assadi et al.

Abstract Psychedelic treatments like MDMA can sometimes have side effects which persist despite management with Western medical approaches. In what follows, we present a case study of an individual who suffered from insomnia, anxiety, tinnitus, and more for months following MDMA therapy. Ultimately, her symptoms responded to management within the Traditional Chinese Medicine framework. We...

Preliminary safety and effectiveness of psilocybin-assisted therapy in adults with fibromyalgia: an open-label pilot clinical trial

Frontiers in Pain Research March 18, 2025 Jenna McAfee, Avinash Hosanagar, Vijay Tarnal et al. 18 citations

Introduction Fibromyalgia (FM) is the prototypical nociplastic pain condition, characterized by widespread pain and issues with cognition, mood, and sleep. Currently, there are limited treatment options available that effectively treat FM symptoms. Psilocybin-assisted therapy (PAT) is an emerging combined drug-therapy intervention, but no studies to-date have investigated PAT for FM. Methods...

Psilocybin-assisted psychotherapy for methamphetamine dependence: a case report involving daily methamphetamine use

Frontiers in Psychiatry December 6, 2024 Jonathan Brett, Elizabeth Knock, Kathy Watson et al. 7 citations

Methamphetamine (MA) dependence leads to severe physical and psychological issues. Current treatments, including psychosocial therapies and residential rehabilitation, face limitations such as high relapse rates, cost, and accessibility issues. As a result, there is an urgent need for novel approaches to treat MA dependence that are effective, affordable, and accessible to patients. Psilocybin,...

Psychoanalyst attitudes towards psychedelic-assisted therapy

Drugs Education Prevention and Policy June 4, 2024 Eli Kraiem, Marc J. Diener, Jeffrey Guss et al. 4 citations

Background Numerous clinical trials have supported psychedelic-assisted therapy (PAT) as a treatment for psychiatric disorders such as depression, anxiety, post-traumatic stress, and substance use. While empirical evidence indicates PAT’s benefits, the perspectives of mental health practitioners on this topic remain unclear.Methods This quantitative study attempted to capture psychoanalyst...

Psychological flexibility as a mechanism of change in psilocybin-assisted therapy for major depression: results from an exploratory placebo-controlled trial.

Scientific Reports April 17, 2024 Jordan Sloshower, Richard J. Zeifman, Jeffrey Guss et al. 56 citations

Several phase II studies have demonstrated that psilocybin-assisted therapy shows therapeutic potential across a spectrum of neuropsychiatric conditions, including major depressive disorder (MDD). However, the mechanisms underlying its often persisting beneficial effects remain unclear. Observational research suggests that improvements in psychological flexibility may mediate therapeutic...

Lower-dose psycholytic therapy – A neglected approach

Frontiers in Psychiatry December 2, 2022 Torsten Passie, Jeffrey Guss, Rainer Krähenmann 71 citations

Lysergic acid diethylamide (LSD) and similar psychoactive drugs have been used in psychotherapy since 1949, when the first clinical study with lower-dose LSD showed therapeutically relevant effects. This caused an intense interest among psychotherapists and researchers, alike, on an international scale. In 1960, the use of serial lower-dose LSD/psilocybin sessions in a psychoanalytical...

Manuel de Yale pour la Thérapie de la Dépression Assistée par la Psilocybine

November 15, 2022 Jeffrey Guss, Robert Krause, Jordan Sloshower preprint

This is the French translation of the Yale Manual for Psilocybin-Assisted Therapy of Depression. Le Manuel de Yale pour le traitement thérapeutique de la dépression assisté par la psilocybine fournit aux chercheurs et aux thérapeutes des méthodes, une structure et des domaines à prendre en compte concernant l'utilisation de la thérapie assistée par les psychédéliques dans le traitement du...

Commentary: Psychedelics and psychotherapy: Cognitive-behavioral approaches as default

Frontiers in Psychology September 30, 2022 John Burton, Austin Ratner, Timothy Cooper et al.

GENERAL COMMENTARY article Front. Psychol., 30 September 2022Sec. Psychology for Clinical Settings Volume 13 - 2022 | https://doi.org/10.3389/fpsyg.2022.1020222

Top Ten Tips Palliative Care Clinicians Should Know About Psychedelic-Assisted Therapy in the Context of Serious Illness.

Journal of Palliative Medicine August 1, 2022 William E Rosa, Zachary Sager, Megan Miller et al. 49 citations

Psychedelic-assisted therapy (PAT) is a burgeoning treatment with growing interest across a variety of settings and disciplines. Empirical evidence supports PAT as a novel therapeutic approach that provides safe and effective treatment for people suffering from a variety of diagnoses, including treatment-resistant depression, substance use disorder, and post-traumatic stress disorder. Within...

Acute and Sustained Reductions in Loss of Meaning and Suicidal Ideation Following Psilocybin-Assisted Psychotherapy for Psychiatric and Existential Distress in Life-Threatening Cancer

ACS Pharmacology & Translational Science March 18, 2021 Stephen Ross, Gabrielle Agin-Liebes, Sharon L. Lo et al. 133 citations

People with advanced cancer are at heightened risk of desire for hastened death (DHD), suicidal ideation (SI), and completed suicide. Loss of Meaning (LoM), a component of demoralization, can be elevated by a cancer diagnosis and predicts DHD and SI in this population. We completed a randomized controlled trial in which psilocybin-assisted psychotherapy (PAP) produced rapid and sustained...

The Yale Manual for Psilocybin-Assisted Therapy of Depression (using Acceptance and Commitment Therapy as a Therapeutic Frame)

August 13, 2020 Jeffrey Guss, Robert Krause, Jordan Sloshower 86 citations preprint

The Yale Manual for Psilocybin-Assisted Therapy of Depression provides researchers and therapists with methods, structure, and areas to consider regarding the use of psychedelic- assisted therapy in the treatment of Major Depressive Disorder (MDD). In particular, this manual illustrates a mode of utilizing Acceptance and Commitment Therapy (ACT) as a therapeutic framework for...

Long-term follow-up of psilocybin-assisted psychotherapy for psychiatric and existential distress in patients with life-threatening cancer

Journal of Psychopharmacology January 9, 2020 Gabrielle Agin-Liebes, Tara C. Malone, Matthew M. Yalch et al. 353 citations

Background: A recently published randomized controlled trial compared single-dose psilocybin with single-dose niacin in conjunction with psychotherapy in participants with cancer-related psychiatric distress. Results suggested that psilocybin-assisted psychotherapy facilitated improvements in psychiatric and existential distress, quality of life, and spiritual well-being up to seven weeks prior...

Psilocybin-assisted therapy of major depressive disorder using Acceptance and Commitment Therapy as a therapeutic frame

Journal of Contextual Behavioral Science 2020 Jordan Sloshower, Jeffrey Guss, Robert Krause et al. 168 citations

Abstract Psychedelic-assisted therapy is based on the premise that psychedelic substances can act as catalysts or adjuncts to psychotherapeutic processes. Recent clinical trials involving psychedelic-assisted therapy have generally employed a similar three-part structure consisting of preparation, support during the dosing sessions, and subsequent “integration.” However, the content of these...

The influence of therapists’ first-hand experience with psychedelics on psychedelic-assisted psychotherapy research and therapist training

Journal of Psychedelic Studies October 5, 2018 Elizabeth M. Nielson, Jeffrey Guss 104 citations

Clinical research on psychedelic-assisted psychotherapy is rapidly advancing in the USA, with two drugs, psilocybin and MDMA, progressing through a structure of FDA-approved trials on a trajectory toward Drug Enforcement Agency rescheduling for therapeutic use. Researcher’s and clinician’s personal use of psychedelics was cited as a potential confound in psychedelic research studies conducted...

Individual Experiences in Four Cancer Patients Following Psilocybin-Assisted Psychotherapy

Frontiers in Pharmacology April 3, 2018 Tara C. Malone, Sarah E. Mennenga, Jeffrey Guss et al. 128 citations

A growing body of evidence shows that existential and spiritual well-being in cancer patients is associated with better medical outcomes, improved quality of life, and serves as a buffer against depression, hopelessness, and desire for hastened death. Historical and recent research suggests a role for psilocybin-assisted psychotherapy in treating cancer-related anxiety and depression. A...

Cancer at the Dinner Table: Experiences of Psilocybin-Assisted Psychotherapy for the Treatment of Cancer-Related Distress

Journal of Humanistic Psychology June 14, 2017 Thomas Cody Swift, Alexander Belser, Gabrielle Agin-Liebes et al. 187 citations

Recent randomized controlled trials of psilocybin-assisted psychotherapy for patients with cancer suggest that this treatment results in large-magnitude reductions in anxiety and depression as well as improvements in attitudes toward disease progression and death, quality of life, and spirituality. To better understand these findings, we sought to identify psychological mechanisms of action...

Patient Experiences of Psilocybin-Assisted Psychotherapy: An Interpretative Phenomenological Analysis

Journal of Humanistic Psychology April 28, 2017 Alexander Belser, Gabrielle Agin-Liebes, Thomas Cody Swift et al. 305 citations

The psychological mechanisms of action involved in psilocybin-assisted psychotherapy are not yet well understood. Despite a resurgence of quantitative research regarding psilocybin, the current study is the first qualitative study of participant experiences in psilocybin-assisted psychotherapy. Semistructured interviews were carried out with 13 adult participants aged 22 to 69 years ( M = 50...

Rapid and sustained symptom reduction following psilocybin treatment for anxiety and depression in patients with life-threatening cancer: a randomized controlled trial

Journal of Psychopharmacology November 30, 2016 Stephen Ross, Anthony P. Bossis, Jeffrey Guss et al. 1,699 citations

Background: Clinically significant anxiety and depression are common in patients with cancer, and are associated with poor psychiatric and medical outcomes. Historical and recent research suggests a role for psilocybin to treat cancer-related anxiety and depression. Methods: In this double-blind, placebo-controlled, crossover trial, 29 patients with cancer-related anxiety and depression were...