This seminar examines the emerging field of psychedelic-assisted therapy. Students will critically review the empirical literature on psychedelic-assisted interventions across a range of mental health outcomes, with attention to study design, therapeutic models, contextual factors, and processes of change. The course will also consider practical and ethical issues in the delivery of psychedelic-assisted therapy, including therapist training, safety and risk management, and the challenges of translating findings from controlled trials into clinical practice. Students will be encouraged to evaluate study designs and their limitations and to identify ways to improve study methodology and strengthen the evidence base. We will also examine the role psychedelic-assisted therapy may ultimately play within evidence-based mental health care, and the role psychotherapy itself may play within psychedelic treatment. *Open to Psychology Ph.D students.