• Ph D, University of Toledo, 2018
• MA, University of Toledo, 2015
• BA, Creighton University, 2013

• Licensed Psychologist, South Dakota

• Enhancing Measurement-Based Care and Clinical Accessibility in a Rural Underserved Community Training Clinic, Society for a Science of Clinical Psychology (APA Division 12 Section III) , (2024 - Present)

Citations listed below are presented in a standardized, modified format for display purposes only. They do not necessarily reflect the preferred style and conventions of the faculty member or discipline.

• Byllesby, Brianna, Charak, Ruby, Cano-Gonzalez, Ines, and Christ, Nicole. A Psychometric Investigation of the Distress Tolerance Scale Short Form (DTS-SF): Reliability, Validity, and Factor Structure in a Trauma-Exposed Sample. Journal of Psychopathology and Behavioral Assessment, 2025. (DOI: https://doi.org/10.1007/s10862-025-10226-8)
• Byllesby, Brianna, and Palmieri, Patrick. The Association between PTSD Symptom Severity and Distress Tolerance in Traumatic Stress Treatment, 29-39. Vol. 38 Journal of Traumatic Stress, 2025. (DOI: 10.1002/jts.23092)
• Byllesby, Brianna, and Palmieri, Patrick. A Bifactor Model of General and Specific PTSD Symptom Change During Treatment, 2595-2604. Vol. 30, Iss. 8 Assessment, 2023. (DOI: 10.1177/10731911231156646)
• Byllesby, Brianna, Haney, Alison, and Hemmy Asamsama, Octaviana. Emotion Dysregulation and Substance Use Risk and Protective Factors Among Veterans in Residential Treatment, 930-938. Vol. 58, Iss. 7 Substance Use and Misuse, 2023. (DOI: 10.1080/10826084.2023.2196575)
• Charak, Ruby, Cano-Gonzalez, Ines, Ronzón-Tirada, Roman, Ford, Julian D., Byllesby, Brianna, Shevlin , Mark, Karatzias, Thanos, Hyland, Philip, and Cloitre, Marylene. Factor Structure of the International Trauma Questionnaire in Trauma-Exposed LGBTQ+ Adults: Role of Accumulating Traumatic Events and Minority Stress Heterosexist Experiences, 628-636. Vol. 15, Iss. 4 Psychological Trauma: Theory, Research, Practice, and Policy, 2023. (DOI: 10.1037/tra0001440)
• Byllesby, Brianna, Ripley, Adam, and Palmieri, Patrick. Replication and Longitudinal Measurement Invariance of the PTCI-9, 1166-1171. Vol. 34, Iss. 12 Psychological Assessment, 2022. (DOI: 10.1037/pas0001164)
• Christ, Nicole, Byllesby, Brianna, and Elhai, Jon. The Effect of Cognitive-Affective Factors on PTSD and Alcohol Use Symptoms: An Investigation on Rumination, 2053–2062. Vol. 57, Iss. 14 Substance Use and Misuse, 2022. (DOI: 10.1080/10826084.2022.2129997)
• Durham, Tory, Byllesby, Brianna, Elhai, Jon, and Wang, Li. Latent Profile Analysis of PTSD and Dissociation and Relations with Anger, 1595-1602. Vol. 41 Current Psychology, 2022. (DOI: 10.1007/s12144-020-00693-5)
• Byllesby, Brianna, Stayton Coe, Laura, Dickstein, Benjamin, and Chard, Kathleen. Psychometric Evaluation of the Brief Experiential Avoidance Questionnaire Among Treatment-Seeking Veterans with Posttraumatic Stress Disorder, 785-789. Vol. 12, Iss. 7 Psychological Trauma: Theory, Research, Practice, and Policy, 2020. (DOI: 10.1037/tra0000581)
• Byllesby, Brianna, Dickstein, Benjamin, and Chard, Kathleen. The Probability of Change Versus Dropout in Veterans Receiving Cognitive Processing Therapy for Posttraumatic Stress Disorder, 103483. Vol. 123 Behaviour Research and Therapy, 2019. (DOI: 10.1016/j.brat.2019.103483)

• Khadka, Shukirti, Charak, R, and Byllesby, Brianna, A latent profile analysis of trauma psychopathology: Differential impact of anger and emotion regulation. Presented at the International Society for Traumatic Stress Studies Annual Meeting, Baltimore, MD. (September 20, 2025)
• Helms, B, Charak, R, and Byllesby, Brianna, Relationship between alcohol use, PTSD symptom severity, and transdiagnostic factors in a trauma exposed sample. Presented at the International Society for Traumatic Stress Studies Annual Meeting, Baltimore, MD. (September 20, 2025)
• Byllesby, Brianna, and Palmieri, P, Factor structure and predictive validity of a two-factor model of PTSD symptoms. Presented at the International Society for Traumatic Stress Studies Annual Meeting, Baltimore, MD. (September 19, 2025)
• Cano-Gonzalez, I, Byllesby, Brianna, and Charak, R, Cyber intimate partner violence, problematic technology use, and mechanisms: An exploratory mixed method approach. Presented at the International Society for Traumatic Stress Studies Annual Meeting, Baltimore, MD. (September 18, 2025)
• Harrington, Morgan, Khadka, Shukirti, and Byllesby, Brianna, Examining anger's moderating role in the relationship between PTSD/CPTSD and emotional reactivity. Presented at the International Society for Traumatic Stress Studies Annual Meeting, Baltimore, MD. (September 18, 2025)
• Charak, R, Ramos Martinez, M I., Mondolfi Miguel, M L., Altema-McNeely, N, and Byllesby, Brianna, Examining systemic inequities and interpersonal violence, resilience, and posttraumatic stress symptoms in trauma-exposed female parenting students: A mixed methods approach. Presented at the International Society for Traumatic Stress Studies Annual Meeting, Baltimore, MD. (September 18, 2025)
• Byllesby, Brianna, Charak, R, Cano-Gonzalez, I, and Christ, N, Reliability, validity, and factor structure of the Distress Tolerance Scale Short Form (DTS-SF). Presented at the International Society for Traumatic Stress Studies Annual Meeting, Baltimore, MD. (September 18, 2025)
• Khadka, S, Harmouch, S, and Byllesby, Brianna, A latent profile analysis of internalizing psychopathology. Presented at the Midwest Psychological Association Conference, Chicago, IL. (April 11, 2025)
• Harmouch, S, Dhungel, N, Charak, R, and Byllesby, Brianna, Differential relations of PTSD factors and experiential avoidance. Presented at the International Society for Traumatic Stress Studies Annual Meeting, Boston, MA. (September 2024)
• Cerroblanco, J, Byllesby, Brianna, Cano-Gonzalez, I, and Charak, R, The impact of rumination on the association between cyber sexual IPV and PTSS in trauma exposed college students. Presented at the International Society for Traumatic Stress Studies Annual Meeting, Boston, MA. (September 2024)
• Byllesby, Brianna, and Palmieri, P, The longitudinal association between posttraumatic stress symptom severity and distress tolerance in treatment. Presented at the International Society for Traumatic Stress Studies Annual Meeting, Boston, MA. (September 2024)
• Flores, A, Ramos Martinez , M, Cano-Gonzalez, I, Byllesby, Brianna, and Charak, R, The mediating role of psychological wellbeing in the associations between experiencing childhood trauma and mental health outcomes. Presented at the International Society for Traumatic Stress Studies Annual Meeting, Boston, MA. (September 2024)
• Harmouch, Sirine, Dhungel, Nishan, and Byllesby, Brianna, Examining the factor structure of the PCL-5 in trauma-exposed and healthy controls. . Presented at the Midwest Psychological Association Conference, Chicago, IL. (April 19, 2024)
• Dhungel, Nishan, Rowe, Emily, Byllesby, Brianna, and Charak, Ruby, Differential moderation of experiential avoidance and emotional avoidance between anxiety sensitivity and PTSD symptom severity. Presented at the International Society for Traumatic Stress Studies Annual Meeting, Los Angeles, CA. (November 2023)
• Newton, Megan, Durham, Tory, and Byllesby, Brianna, Link between dissociation, emotion regulation, and PTSD using moderation analyses. Presented at the International Society for Traumatic Stress Studies Annual Meeting, Los Angeles. (November 2023)
• Cano-Gonzalez, Ines, Bhattacharya, S, Ronzon-Tirado, Ricardo, Charak, Ruby, and Byllesby, Brianna, Pathways between PTSD/CPTSD and depression in LGBTQ+ adults from Spain: Understanding comorbidity with network analysis. Presented at the International Society for Traumatic Stress Studies Annual Meeting, Los Angeles, CA. (November 2023)
• Byllesby, Brianna, and Palmieri, Patrick, Psychometric analysis of the Distress Tolerance Scale Short-Form in a clinical trauma-exposed sample. Presented at the International Society for Traumatic Stress Studies Annual Meeting, Los Angeles, CA. (November 2023)
• Flores, Ayleen, Cano-Gonzalez, Ines, Charak, Ruby, and Byllesby, Brianna, The mediating role of peer attachment in the associations between experiencing childhood maltreatment and depression and anxiety. Presented at the International Society for Traumatic Stress Studies Annual Meeting, Los Angeles, CA. (November 2023)
• Rowe, Emily, Dhungel, Nishan, Byllesby, Brianna, and Charak, Ruby, The roles of emotional avoidance and psychological flexibility in the relationship between borderline personality disorder traits and PTSD symptoms. Presented at the International Society for Traumatic Stress Studies Annual Meeting, Los Angeles, CA. (November 2023)
• Dhungel, Nishan, Faulkenberry, Rachel, and Byllesby, Brianna, Emotional avoidance and impulsivity as moderators of PTSD symptom severity and anger. Presented at the International Society for Traumatic Stress Studies Annual Meeting, Atlanta, GA. (November 2022)
• Byllesby, Brianna, and Palmieri, Patrick, Examining the relationships between PTSD symptom severity and sleep during treatment. Presented at the International Society for Traumatic Stress Studies Annual Meeting, Atlanta, GA. (November 2022)
• Rowe, Emily, Newton, Megan, Kost, Sierra, and Byllesby, Brianna, The roles of negative urgency and distress tolerance in PTSD and depression symptom severity. Presented at the International Society for Traumatic Stress Studies Annual Meeting, Atlanta, GA. (November 2022)