Leopoldo J. Cabassa, PhD MSW

Center for Mental Health Services Research, George Warren Brown School of Social Work, Washington University, St. Louis, Missouri; Center for Holistic Interdisciplinary Research in Psychedelics, Washington University, St. Louis, Missouri

JCP
Hallucinogen–Psychosis Associations Are Confounded by Baseline Psychiatric History
Original Research ▶ Video

June 10, 2026

Apparent associations between hallucinogen use and psychosis appear largely attributable to baseline psychiatric comorbidities rather than direct causal effects.
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JCP
Original Research

November 15, 2007

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JCP
Original Research

June 15, 2007

, , , et al

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