Zach Walsh

(He, Him, His)


Other Titles: Registered Psychologist #2011
Office: ASC 206
Phone: 250.807.9373

Graduate student supervisor. Will consider Psychology graduate students for September 2024 intake.

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Research Summary

Cannabis use - medical and non-medical; substance use; hallucinogens; harm reduction; personality disorder; partner violence; aggression; third-stream/mindfulness behavior therapies; drug policy.

Courses & Teaching

Drugs and behavior; psychotherapy.


Zach is a Professor in the UBC Department of Psychology. He attended the University of Winnipeg as an undergraduate, received a PhD in Clinical Psychology in 2008 from the Chicago Medical School/Rosalind Franklin University, and completed a clinical internship and a research fellowship at the Brown University Centre for Alcohol and Addiction Studies. Dr. Walsh is a registered clinical psychologist whose research has been supported by the Canadian Institute of Health Research, the Social Sciences and Humanities Research Council, Health Canada, BC Interior Health Authority, the Peter Wall Endowment, and the American Psychological Association.


Zach Walsh Research Lab
Google Scholar


PhD Chicago Medical School/Rosalind Franklin University

Selected Publications & Presentations

Thiessen, M. S., Walsh, Z., Bird, B. M., & Lafrance, A. (2018). Psychedelic use and intimate partner violence: The role of emotion regulation. Journal of Psychopharmacology, 32(7), 749-755.

Walsh, Z., Gonzalez, R., Crosby, K., Thiessen, M. S., Carroll, C., Bonn-Miller, M. O. (2017). Medical cannabis and mental health: A guided systematic review. Clinical Psychology Review, 51, 15-29.

Walsh, Z., Hendricks, P. S., Smith, S., Kosson, D. S., Thiessen, M. S., Lucas, P., & Swogger, M. T. (2016). Hallucinogen use and intimate partner violence: Prospective evidence consistent with protective effects among men with histories of problematic substance use. Journal of Psychopharmacology, 30(7), 601-607.

Lucas, P., Walsh, Z., Crosby, K., Callaway, R., Belle‐Isle, L., Kay, R., Capler, R., & Holtzman, S. (2015). Substituting cannabis for prescription drugs, alcohol and other substances among medical cannabis patients: The impact of contextual factors. Drug and Alcohol Review.

Swogger, M. T., Hart, E., Erowid, F., Erowid, E., Trabold, N., Yee, K., Parkhurst, A., Priddy, B. M., & Walsh, Z. (2015). Experience of Kratom users: A qualitative analysis. Journal of Psychoactive Drugs.

Belle-Isle, L.*, Walsh, Z.*, Lucas, P., Callaway, R., Capler, R., Kay, R., & Holtzman, S. (2014). Barrier to access for Canadians who use cannabis for therapeutic purposes. International Journal of Drug Policy, 25, 691-699. * co-lead authors

Walsh, Z., Callaway, R., Belle-Isle, L., Capler, R., Kay, R., Lucas, P., & Holtzman, S. (2013). Cannabis for therapeutic purposes: Patient characteristics, access, and reasons for use. International Journal of Drug Policy, 24, 511-516.

Walsh, Z. (2013). Psychopathy and criminal violence: The moderating effect of ethnicity. Law & Human Behavior, 37, 303-311.

Walsh, Z., Shea, M. T., Yen, S., Edelen, M.O., Hopwood, C. J., Markowitz, J. C., Ansell, E. B., Morey, L. C., Grilo, C. M., Sanislow, C. A., Skodol, A. E., Gunderson, J. G., Zanarini, M.C.,& McGlashan, T.H. (2012). Socioeconomic-status and mental health in a personality disorder sample: The importance of neighbourhood factors. Journal of Personality Disorders, 26, 1-12.

Professional Services/Affiliations/Committees

Advisory Board, Multidisciplinary Association for Psychedelic Studies


October 30, 2018Do-it-yourself cannabis edible kits should be approached with caution. (Toronto Star)

October 17, 2018Pot is legal. Is it time to redefine sobriety? Dr. Walsh explores the nuances of sobriety and different states of consciousness. (The Walrus)

October 17, 2018Ever wonder why music sounds so good high? (CBC Music)

October 16, 2018How cannabis legalization will change research. (CBC News)

October 10, 2018: What cannabis legalization means for campuses across the nation. (CTV News)



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