Publications
Wrona, M., Beckstein, A., Bigknife Antonio, O., & Williamson, A. (2025). (Re)Centering Indigenous American values in a college-setting: A higher education program to increase sense of belonging for Indigenous American psychology students. Journal of American Indian Education, 63(1).
Vergunst, F., Williamson, R. E., Mazzazza, A., Berry, H., Olff, M. (in press). Definitions and scope of the mental health burden of global climate change. Nature Mental Health.
Williamson, R. E., Hardt, S., Courtney, E. P., & Goldenberg, J. L. (2024). Sexual Victimization and the Existential Impact of #MeToo. Journal of Humanistic Psychology. https://doi.org/10.1177/0022167824123494
Williamson, R. E., Macia, K. S., Burton, J., Wickham, R. E.. (2024). Mapping the Pathways between Posttraumatic Stress Disorder, Depression, and Alcohol and Cannabis Use: A Network Analysis. Journal of Dual Diagnosis. https://doi.org/10.1080/15504263.2024.2330620
Salimi, Y., Hoeboer, C., Haghi, S. M., Williamson, R. E., Rahimi, M. D., Rajabi-Gilan, N., Almasi, A., Olff, M. (2023). Trauma and its consequences in Iran: Cross-cultural adaption and validation of the Global Psychotrauma Screen in a representative sample. BMC Psychiatry, 23(1), 1-11. https://doi.org/10.1186/s12888-023-04564-8
Coimbra, B. M., Hoeboer, C. M., van Zuiden, M., Williamson, R. E., D’Elia, A. T., Mello, A. F., & Olff, M. (2023). The relationship between tonic immobility and the development, severity, and course of posttraumatic stress disorder: systematic and meta-analytic literature review. Journal of anxiety disorders, 102730.
Williamson, R. E., Courtney, E. P., & Goldenberg, J. L. (2022). Fetch the boltcutters: the existential labor and liberation of #MeToo. The Humanistic Psychologist: Special Issue on Women in Humanistic Psychology, 50(3), 443. https://doi.org/10.1037/hum0000289
Coimbra, B., Carvalho, C., van Zuiden, M., Williamson, R. E., Mello, A., Ota, V., Belangero, S., Olff, M., & Mello, M. (2022). The impact of neighborhood context on telomere length: a systematic review. Health & Place, 74(9):102746. https://doi.org/10.1016/j.healthplace.2022.102746
Williamson, R. E., Hoeboer, C., Primasari, I., Qing, Y., Coimbra, B., Hovnanyan, A., Grace, E., & Olff, M. (2021). Symptom Networks of COVID-19-Related Versus Other Potentially Traumatic Events in a Global Sample. Journal of Anxiety Disorders, 84(3):102476. https://doi.org/10.1016/j.janxdis.2021.102476
Olff, M., Primasari, I., Qing, Y., Coimbra, B., Hovnanyan, A., Grace, E., Williamson, R. E., & Hoeboer, C. (2021). Mental health responses to COVID-19 around the world. European Journal of Psychotraumatology, 12(1). https://doi.org/10.1080/20008198.2021.1929754
Reed, II, D. E., Williamson, R. E., & Wickham, R. E. (2021). Memento Mori: Understanding Existential Anxiety through the Existential Pathway Model. Journal of Theoretical Social Psychology, 5(1), 14-25. https://doi.org/10.1002/jts5.79
Gauvin, S. E. M., Joy, P., Dunn, B., Lee, M. & Williamson, R. E. (2021). Empirical evaluation of Rainbow Reflections: A comic book anthology on body image for queer men. Archives of Sexual Behavior, 50, 69-82. https://doi.org/10.1007/s10508-020-01876-8
Williamson, R. E., Reed II, D. E., & Wickham, R. E. (2020). A traumatic dissonance theory of perpetrator-related distress. Journal of Theoretical Social Psychology. 2020;00: 1–17. https://doi.org/10.1002/jts5.59
Bunge, E., Cook, H., Bond, M., Williamson, R. E., Cano, M., Barrera, A. Z., Leykin, Y., & Muñoz, R. F. (2018). Comparing Amazon Mechanical Turk with unpaid internet resources in online clinical trials. Internet Interventions, 12, 68-73. https://doi.org/10.1016/j.invent.2018.04.001
Williamson, R. E., Reed II, D. E., Wickham, R. E., & Field, N. P. (2017). The mediational role of posttraumatic stress in the relationship between domestic violence exposure and peer victimization: A Cambodian sample. Emotional and Behavioural Difficulties, 23(1), 28-38. https://doi.org/10.1080/13632752.2017.1335121
Bunge, E., Williamson, R. E., Cano, M., & Muñoz, R. F. (2016). Mood management effects of a brief online intervention. Internet Interventions, 5, 36-43. https://doi.org/10.1016/j.invent.2016.06.001
Wickham, R. E., Williamson, R. E., Beard, C. L., Kobayashi, C. L., & Hirst, T. (2016). Authenticity attenuates the negative effects of interpersonal conflict on daily well-being. Journal of Research in Personality, 60, 56-62. https://doi.org/10.1016/j.jrp.2015.11.006
Wickham, R. E. Reed II, D. E., & Williamson, R. E. (2015). Establishing the psychometric properties of the Self and Perceived-partner Authenticity in Relationships Scale-Short Form (AIRS-SF): Measurement invariance, reliability, and incremental validity. Personality and Individual Differences, 77, 62-65. https://doi.org/10.1016/j.paid.2014.12.049
ET Lab Conference Presentations
Bigknife Antonio, O. (April 2025) Addressing Climate Change Distress: A Traditional Ecological Knowledge Psychological Intervention for Indigenous Peoples. Lightning presentation at the Climate & Health in the 406 conference, Missoula, MT.
Sten, E., Neater, D., Martin-Wagar, C., & Williamson, R. E. (2025, April 12). Prevalence of climate concerns and provider responses in Montana mental healthcare settings [Poster presentation]. Montana Health Professionals for a Healthy Climate, Missoula, MT, United States.
Bigknife Antonio, O. (March 2025) Colonialism and the Climate Crisis: The Compounding Effects of History on Indigenous Reactions to Climate Change. Oral presentation at the Center for the Future of Native Peoples Symposium, Carlisle, PA.
Bigknife Antonio, O., Smith, A., & Cooley, S. (January 2025) We Indige(knew) that: The importance of Indigenous Knowledge in Psychology. Oral presentation at PsyCon, Missoula, MT.
Bean, P., King, O., Olsen, M. & Williamson, R. E. (September 2024). Predictors of Psychological Distress and Resilience in Relation to Climate Change. Poster presented at the meeting of the International Society for Traumatic Stress Studies, Los Angeles, CA.
Williamson, R. E. (September 2024). Clinician Reactions to Client Climate Concerns. In J. Ruzek (chair), Psychology in a Changing Climate: Clinical Reactions and Responses to Climate Change. [Symposium]. The meeting of the International Society for Traumatic Stress Studies, Boston, MA.
Bintz, G., Hardt, S. & Williamson, R. E. (April 2024). The Impact of Past Experiences of Sexual violence and Coercion on Abortion Attitudes. Oral presentation at the University of Montana Conference on Undergraduate Research, Missoula, MT.
McMillian, I., King, B. & Williamson, R. E. (April 2024). The Influence of Political Affiliation on Climate Change Attitudes.Poster presented at the University of Montana Conference on Undergraduate Research, Missoula, MT.
Raiman, K., Olsen, M. & Williamson, R. E. (April 2024). The Climate Crisis: Mental Health Providers' Beliefs About Responsibility and Professional Relevance. Poster presented at the University of Montana Conference on Undergraduate Research, Missoula, MT.
Bigknife Antonio, O. (March 2024). Indigenous Research Perspectives on Health. Invited panel speaker at the University of Montana’s GradCon, Missoula, MT.
Bigknife Antonio, O., Nicholson, J. & Williamson, R. E. (March 2024). Transdiagnostic Responses to Potentially Traumatic Events Involving Causing Harm to Others. Poster presented at the University of Montana’s GradCon, Missoula, MT.
King, B., Bigknife Antonio, O. & Williamson, R. E. (March 2024). The Existential Threat of Climate Change: Responses to reminders of personal and planetary annihilation. Poster presented at the University of Montana’s GradCon, Missoula, MT.
Williamson, R. E. (December 2023). Climate-Informed Practice: a Clinical Imperative and Interdisciplinary Opportunity.Invited plenary speaker at the Global Collaboration on Traumatic Stress Conference, Cape Town, South Africa.
Williamson, R. E. (December 2023). Climate Change and Mental Health: Setting an Agenda for Researchers and Educators. Invited Discussion Chair at the Global Collaboration on Traumatic Stress Conference, Cape Town, South Africa.
Hardt, S., Bigknife Antonio, O., Courtney, E., Goldenberg, J. & Williamson, R. E. (November 2023). Perceptions of the MeToo Movement and the Role of Sexual Victimization and Gender Identity. Poster presented at the meeting of the International Society for Traumatic Stress Studies, Los Angeles, CA.
Bigknife Antonio, O., Nicholson, J. & Williamson, R. E. (November 2023). Transdiagnostic Responses to Potentially Traumatic Events Involving Causing Harm to Others. Poster presented at the meeting of the International Society for Traumatic Stress Studies, Los Angeles, CA.
Williamson, R. E., Hardt, S., Courtney, E. & Goldenberg, J. (November 2023). Criteria ‘E’: Accounting for the Existential Impact of Direct and Observed Sexual Victimization within the Context of MeToo. Poster presented at the meeting of the International Society for Traumatic Stress Studies, Los Angeles, CA.
Williamson, R. E. (September 2023). Climate Change in a Traumatic Stress Framework. Oral presentation at the ARQ National Psychotrauma Centre 50th anniversary conference, Hilversum, the Netherlands.