Brianna Byllesby

My research primarily investigates posttraumatic stress disorder (PTSD), its construct validity, and psychological outcomes following trauma exposure. I am particularly interested in the comorbidity between PTSD and related diagnoses and how these relationships may be influenced by transdiagnostic development and maintenance factors. I also examine these transdiagnostic factors in the context of treatment as potential moderators or mechanisms of change in trauma-focused treatment.

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, 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)
Charak, Ruby, Byllesby, Brianna, Fowler, J C., Sharp, Carla, Elhai, Jon, and Frueh, B C.. Assessment of the Revised Difficulties in Emotion Regulation Scales Among Adolescents and Adults with Severe Mental Illness, 278-283. Vol. 279 Psychiatry Research, 2019. (DOI: 10.1016/j.psychres.2019.04.010)
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)
Durham, Tory, Byllesby, Brianna, Lv, Xin, Elhai, Jon, and Wang, Li. Anger as an Underlying Dimension of Posttraumatic Stress Disorder, 535-540. Vol. 267 Psychiatry Research, 2018. (DOI: 10.1016/j.psychres.2018.06.011)
Byllesby, Brianna, Elhai, Jon, Tamburrino, Marijo, Fine, Thomas, Cohen, Gregory, Sampson, Laura, Shirley, Edwin, Chan, Philip, Liberzon, Israel, Galea, Sandro, and Calabrese, Joseph. General Distress is More Important that PTSD's Cognition and Mood Alterations Factor in Accounting for PTSD and Depression's Comorbidity, 118-123. Vol. 211 Journal of Affective Disorders, 2017. (DOI: 10.1016/j.jad.2017.01.014)
Byllesby, Brianna, Durham, Tory, Forbes, David, Armour, Cherie, and Elhai, Jon. An Investigation of PTSD's Core Dimensions and Relations with Anxiety and Depression, 214-217. Vol. 8, Iss. 2 Psychological Trauma: Theory, Research, Practice, and Policy, 2016. (DOI: 10.1037/tra0000081)
Charak, Ruby, Byllesby, Brianna, Roley, Michelle, Claycomb, Meredith, Durham, Tory, Ross, Jana, Armour, Cherie, and Elhai, Jon. Latent Classes of Childhood Poly-Victimization and Associations with Suicidal Behavior Among Adult Trauma Victims: Moderating Role of Anger, 19-28. Vol. 62 Child Abuse and Neglect, 2016. (DOI: 10.1016/j.chiabu.2016.10.010)
Durham, Tory, Byllesby, Brianna, Armour, Cherie, Forbes, David, and Elhai, Jon. Relations Between Anger and DSM-5 Posttraumatic Stress Disorder Symptoms, 403-409. Vol. 244 Psychiatry Research, 2016. (DOI: 10.1016/j.psychres.2016.08.004)
Byllesby, Brianna, Charak, Ruby, Durham, Tory, Wang, Xin, and Elhai, Jon. The Underlying Role of Negative Affect in the Association between PTSD, Major Depressive Disorder, and Generalized Anxiety Disorder, 655-665. Vol. 38 Journal of Psychopathology and Behavioral Assessment, 2016. (DOI: 10.1007/s10862-016-9555-9)
Contractor, Ateka, Claycomb, Meredith, Byllesby, Brianna, Layne, Christopher, Kaplow, Julie, Steinberg, Alan, and Elhai, Jon. Hispanic Ethnicity and Caucasian Race: Relations with Posttraumatic Stress Disorder's Factor Structure in Clinic-Referred Youth, 456-464. Vol. 7, Iss. 5 Psychological Trauma: Theory, Research, Practice, and Policy, 2015. (DOI: 10.1037/tra0000068)

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)

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