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Dr. Shnaider completed his Ph.D. in clinical psychology at Ryerson University in 2016. He works as a psychologist at the Anxiety Treatment and Research Clinic at St. Joseph's Healthcare Hamilton and is an Assistant Professor in the Department of Psychiatry and Behavioural Neurosciences at McMaster University. He provides treatment and assessment to individuals with trauma and anxiety-related disorders, supervises clinical and research trainees, and provides workshops and seminars on the assessment and treatment of post traumatic stress disorder and anxiety disorders. He also conducts clinical research.

Featured Publications

Shnaider, P., Sijercic, I, Wanklyn, S. G., Suvak, M. K., & Monson, C. M. (2017). The role of social support in cognitive-behavioral conjoint therapy for posttraumatic stress disorder. Behavior Therapy, 48, 285-294.  

Fredman, S. J., Beck, J. G., Shnaider, P., Le, Y., Pukay-Martin, N. D., Pentel, K. Z., Monson, C. M., Simon, N. M., & Marques, L. (2017). Longitudinal associations between PTSD symptoms and dyadic conflict communication following a severe motor vehicle accident. Behavior Therapy, 48, 235-246.  

Shnaider, P., Pukay-Martin, N. D., Sharma, S., Jenzer, T., Fredman, S. J., Macdonald, A., & Monson, C. M. (2015). A preliminary examination of the effects of pre-treatment relationship satisfaction on treatment outcomes in cognitive-behavioral conjoint therapy for PTSD. Couple and Family Psychology: Research and Practice, 4, 229-238.  

Pukay-Martin, N. D., Torbit, L., Landy, M. S. H., Wanklyn, S. G., Shnaider, P., Lane, J. E. M., & Monson, C. M. (2015). An uncontrolled trial of a present-focused cognitive-behavioral conjoint therapy for posttraumatic stress disorder. Journal of Clinical Psychology, 71, 302-312.  

Shnaider, P., Vorstenbosch, V., Macdonald, A., Wells, S. Y., Monson, C. M., & Resick, P. A. (2014). Associations between functioning and PTSD symptom clusters in a dismantling trial of cognitive processing therapy in female interpersonal violence survivors. Journal of Traumatic Stress, 27, 526-534.  

Shnaider, P., Pukay-Martin, N. D., Fredman, S. J., Macdonald, A., & Monson, C. M. (2014). Effects of cognitive-behavioral conjoint therapy for PTSD on partners’ psychological functioning. Journal of Traumatic Stress, 27, 129-136.

Shnaider, P., Belus, J. M., Vorstenbosch, V., Monson, C. M., & Langhinrichsen-Rohling, J. (2014). The mediating role of attributions in the association between intimate relationship distress and depressive symptoms in a dating sample of undergraduate students. Family Journal, 22, 162-169.  

Monson, C. M., Macdonald, A., Vorstenbosch, V., Shnaider, P., Goldstein, E. S. R., Ferrier-Auerbach, A. G., & Mocciola, K. E. (2012). Changes in social adjustment with cognitive processing therapy: Effects of treatment and association with PTSD symptom change. Journal of Traumatic Stress, 25, 519-526.


  • Ph.D., Clinical Psychology, Ryerson University, 2016
  • Internship, St. Joseph's Healthcare Hamilton, 2016
  • M.A., Clinical Psychology, Ryerson University, 2012
  • B.A., Psychology (Specialized Honours), York University, 2010

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