Jodi Viljoen, PhD

Phone: 778-782-8638



Jodi L. Viljoen, Ph.D. is an Associate Professor in the Department of Psychology in the Clinical and Law-Forensic areas, an Associate Director of the Institute for the Reduction of Youth Violence, and the Area Coordinator for the Law-Forensic Psychology Program at SFU.

Dr. Viljoen’s research focuses on approaches to assess and prevent violence, offending, victimization, and related outcomes in adolescents. She has published over 100 articles, chapters, reports, and professional guides, and worked with justice and mental health agencies in various countries (Canada, the United States, the Netherlands, Norway, and the United Kingdom) to implement evidence-based practices. Dr. Viljoen is an author of a risk and needs assessment tool for adolescents (Short-Term Assessment of Risk and Treatability: Adolescent Version; Viljoen, Nicholls, Cruise, Desmarais, & Webster, 2014), and an intervention-planning guide for adolescents (Adolescent Risk Reduction and Resilient Outcomes Work-Plan; Viljoen et al., 2014). Her research has been funded by the Michael Smith Foundation for Health Research (MSFHR), Social Sciences and Humanities Research Council of Canada (SSHRC), and Canadian Institutes for Health Research (CIHR).For her research with adolescent offenders, Dr. Viljoen received the Saleem Shah Award for Early Career Contributions from the American Psychology-Law Society and the American Academy of Forensic Psychology, and a Scholar Award from the Michael Smith Foundation for Health Research.

Representative Publications:

Viljoen, J. L., Bhanwer, A. K., Shaffer, C. S., & Douglas, K. S. (2018). Assessing protective factors for adolescent offending:  A conceptually-informed examination of the SAVRY and YLS/CMI. Assessment. Advance online publication.

Shaffer, C. S., Adjei, J., Viljoen, J. L., Douglas, K. S., & Saewyc, E. M. (2018). Ten-year trends in physical dating victimization among adolescent boys and girls in British Columbia, Canada. Journal of Interpersonal Violence. Advance online publication.

Shaffer, C. S., Gulbransen, E., Viljoen, J. L., Roesch, R. & Douglas, K.S. (2018).  Predictive validity of the MAYSI-2 and PAI-A for suicide-related behavior and non-suicidal self-injury among adjudicated adolescent offenders on probation. Criminal Justice and Behavior. Advance online publication.

Viljoen, J. L., Cochrane, D. M., & Jonnson, M. R. (2018). Do risk assessment tools help to manage and reduce risk of violence and reoffending? A systematic review.  Law and Human Behavior. Advance online publication. doi:10.1037/lhb0000280

McLachlan, K., Gray, A. L., Roesch, R., Douglas, K. S., & Viljoen, J. L. (2018). An evaluation of the predictive validity of the SAVRY and YLS/CMI in young offenders with Fetal Alcohol Spectrum Disorder.  Psychological Assessment. Advance online publication.

Viljoen, J. L., Gray, A. L., Shaffer, C., Bhanwer, A., Tafreshi, D., & Douglas, K. S. (2017). Does reassessment of risk improve predictions? A framework and examination of the SAVRY and YLS/CMI. Psychological Assessment, 29(9), 1096-1110. doi: 10.1037/pas0000402

Viljoen, J. L., Brodersen, E., Shaffer, C., & McMahon, R. J. (2016). Risk reduction interventions for adolescent offenders. In K. Heilbrun, D. DeMatteo, N. S. Goldstein, K. Heilbrun, D. DeMatteo, N. S. Goldstein (Eds.), APA Handbook of Psychology and Juvenile Justice (pp. 517-544). Washington, DC, US: American Psychological Association. doi:10.1037/14643-024

Viljoen, J. L., Gray, A. L., & Barone, C. (2016). Assessing risk for violence and offending in adolescents. In  R. Jackson and R. Roesch (Eds.), Learning Forensic Assessment (2nd Ed., pp. 357 – 388) New York: Routledge.

Shaffer, C., Gatner, D., Gray, A. L., Douglas, K. S., Viljoen, J. L., Tweed, R., & ... Gagnon, N. (2016). Incremental and predictive validity of the antisocial process screening device in a community sample of male and female ethnic minority and Caucasian youth. Journal of Abnormal Child Psychology, 44(8),1599-1612. doi:10.1007/s10802-016-0130-3

Viljoen, J. L., Gray, A. L., Shaffer, C., Latzman, N., Scalora, M., & Ullman, D. (2015). Changes in J-SOAP-II and SAVRY scores over the course of residential, cognitive-behavioral treatment for adolescent sexual offending. Sexual Abuse: Journal of Research and Treatment29(4), 342-374.

Viljoen, J. L., Mordell, S., & Beneteau, J. L. (2012). Prediction of adolescent sexual reoffending: A meta-analysis of the J-SOAP-II, ERASOR, J-SORRAT-II, and Static-99. Law and Human Behavior36(5), 423-438. doi:10.1037/h0093938

Viljoen, J. L., McLachlan, K., & Vincent, G. M. (2010). Assessing violence risk and psychopathy in juvenile and adult offenders: A survey of clinical practices. Assessment17(3), 377-395. doi:10.1177/1073191109359587

Viljoen, J. L., MacDougall, E. M., Gagnon, N. C., & Douglas, K. S. (2010). Psychopathy evidence in legal proceedings involving adolescent offenders. Psychology, Public Policy, And Law16(3), 254-283. doi:10.1037/a0019649