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Stacey B. Armstrong

8 papers in the library · 65 citations · publishing 2023-2026

Papers

Prospective associations of psychedelic treatment for co-occurring alcohol misuse and posttraumatic stress symptoms among United States Special Operations Forces Veterans.

Military psychology : the official journal of the Division of Military Psychology, American Psychological Association January 1, 2024 Stacey B. Armstrong, Yitong Xin, Nathan D. Sepeda et al. 19 citations

Among 45 U.S. Special Operations Forces Veterans with risky alcohol use who completed ibogaine and 5-MeO-DMT treatment in Mexico, alcohol use dropped substantially from an average of 7.2 drinks per drinking day before treatment to 3.6 at one month and 4.0 at six months post-treatment. At one month, 24% were abstinent, 33% were non-risky drinkers, and 42% still risky drinkers; by six months, 16% were abstinent, 31% non-risky, and 53% risky. Responders (abstinent or non-risky) showed very large improvements in PTSD symptoms and cognitive functioning compared to non-responders, while demographics did not differ. The findings suggest psychedelic-assisted therapy may help those with complex trauma and alcohol misuse who have not responded to traditional treatments.

Study protocol of an open-label proof-of-concept trial examining the safety and clinical efficacy of psilocybin-assisted therapy for veterans with PTSD

BMJ Open May 1, 2023 Alan K. Davis, Adam W. Levin, Paul Nagib et al. 19 citations

Psilocybin-assisted therapy may help treat post-traumatic stress disorder (PTSD), which current treatments often fail to relieve, especially in U.S. military veterans. This open-label pilot study will test two psilocybin doses (15 mg and 25 mg) combined with psychotherapy in 15 veterans with severe, treatment-resistant PTSD. The primary safety outcome tracks adverse events and suicidal ideation; the primary PTSD outcome uses the Clinician Administered PTSD Scale-5. Follow-up continues for 6 months after the second session. Results will be published in a peer-reviewed journal.

Differences in attitudes and beliefs about psychedelic-assisted therapy among social workers, psychiatrists, and psychologists in the United States

Journal of Psychedelic Studies August 21, 2023 Stacey B. Armstrong, Adam W. Levin, Yitong Xin et al. 12 citations

Among 856 U.S. mental health professionals—social workers, psychiatrists, and psychologists—there were no differences in confidence that psychedelic-assisted therapy (PAT) would be effective. However, psychiatrists showed a better understanding of PAT than social workers. Psychologists rated PAT as more acceptable than social workers did, and psychologists also rated it as a more reasonable treatment approach than both social workers and psychiatrists. Social workers perceived greater disadvantages of PAT than psychologists and psychiatrists, and they were less likely than both other groups to believe PAT could permanently improve clients' lives. The findings indicate a need for education and training across professions as PAT moves toward approval.

Psychedelic research at a crossroads

Science September 19, 2024 Stacey B. Armstrong, Alan K. Davis 6 citations

Psychedelic-assisted therapy (PAT) combines hallucinogenic drugs like psilocybin and MDMA with psychotherapy, showing potential for treating mental health conditions that affect one in eight people worldwide. Clinical trials in the US and Europe suggest PAT may offer shorter treatment times and stronger effects than existing therapies. However, the field faces significant controversy due to unanswered questions about safety and effectiveness, highlighted by the FDA's recent decision against approving MDMA therapy for PTSD and the retraction of several MDMA trial papers due to unethical therapist conduct and data integrity issues. The research community must address these obstacles to transition from exploratory trials to established, evidence-based treatments.

Five-year outcomes of psilocybin-assisted therapy for Major Depressive Disorder

Journal of Psychedelic Studies September 4, 2025 Alan K. Davis, Meghan DellaCrosse, Nathan D. Sepeda et al. 4 citations

Over a five-year follow-up period, psilocybin-assisted therapy produced significant and sustained reductions in depression for people with major depressive disorder. Among the 18 participants who completed the study, 67% remained in remission for at least five years after treatment. Anxiety and functional impairment also improved. Qualitative interviews revealed lasting positive changes in mindset, emotional health, and relationships, including enhanced empathy, self-acceptance, and improved interpersonal relationships. No severe adverse events were reported. These findings support the long-term efficacy and safety of psilocybin-assisted therapy for reducing depressive symptoms and improving mental health.

The Epidemiology of Psychedelic Use Among United States Military Veterans

Journal of Psychoactive Drugs September 12, 2024 Katinka Hooyer, Rachel Yehuda, Alan K. Davis et al. 4 citations

About half of U.S. military veterans surveyed reported using psychedelics, most often for healing or treatment (70%) and spiritual purposes (48%). The vast majority (85%) said they benefited from use. Veterans who used psychedelics indicated they would be more likely to use VA services, and they expressed greater interest in psychedelic therapy compared to non-users. However, some adverse outcomes were reported, suggesting that without proper preparation and support, psychedelics may carry risks. The findings point to a potential role for psychedelic-assisted approaches in veteran mental health care.

Social Workers' Attitudes and Beliefs about MDMA-Assisted Therapy for Adolescents with PTSD.

Social Work April 1, 2025 Maha N. Mian, Jordan Horan, Taweh Hunter et al. 1 citation

Social workers rated SSRI-assisted therapy as significantly more acceptable, appropriate, and feasible than MDMA-assisted therapy for treating adolescents with treatment-resistant PTSD, with medium-to-large effect sizes. Perceptions of MDMA risk were higher among those who read about MDMA-assisted therapy, and greater psychedelic stigma correlated with higher perceived risk of MDMA. However, more psychedelic knowledge was linked to less stigma and lower perceived risk. These findings suggest that social workers' concerns about MDMA-assisted therapy for adolescents may hinder clinical trial recruitment and future implementation.

Development and assessment of a psychedelic-assisted therapy music playlist for clinical trials: Theory, intentionality, and metrics

Journal of Psychedelic Studies May 28, 2026 Rafaelle Lancelotta, Paul Nagib, Stacey B. Armstrong et al.

A methodology for designing and evaluating a music playlist for a clinical psilocybin trial was developed, combining theory, therapeutic goals, and metrics. The playlist was structured across pre-peak, peak, and post-peak phases of the psilocybin experience. Spotify API metrics (Beats Per Minute, Danceability, Energy, Valence) and a novel human-rated Transcendence measure were used to assess tracks. Most musical features followed the expected emotional arc of the psilocybin experience, but nature-based tracks were sometimes misclassified as high-energy by the Spotify API, revealing algorithmic limitations. Transcendence ratings indicated continued emotional depth during post-peak phases. This proof-of-concept model shows the value of integrating intentional design with algorithmic and experiential metrics, though Spotify metrics may lack stability and generalizability.