Principal Investigator
Rachel Williamson
My research interests focus primarily on the application of existential theory and social psychological theories of meaning-making to psychological trauma. Although clinical conceptualizations of trauma, i.e., PTSD, are often included in my work, I am most interested in studying symbolic trauma. This involves the examination of situations and experiences that are impactful, not necessarily due to a literal threat to one's safety, but because of a threat to one's existential security. I view my research program as theory-based and with an emphasis on applied statistical modeling. By attending to the influence of statistical choices on theory development and paradigm design, both the precision and possibilities of research increases, and isn’t that exciting! Collaborations with students and colleagues, locally and internationally, are important components of my research program. The diversity that students and other collaborators bring to the research process is a resource and a strength—I am always happy to merge my interests and skillset, when appropriate, to support specific topics meaningful to my students and colleagues.
Graduate Students
Olathe Bigknife Antonio (she/her)
Olathe is a third-year clinical psychology doctoral student and an Indians into Psychology scholar. She is Navajo and Shawnee and grew up in Arizona on the Navajo Nation. She received her Bachelor of Arts in Psychology from Fort Lewis College in Durango, Colorado where her research examined compassion for out-group issues using terror management theory. Her current research seeks to examine the effects of intentional engagement with the environment through traditional ecological knowledge for an Indigenous population. She is specifically interested in changes in subjective connection to nature and climate change distress. Outside of academics, Olathe enjoys traveling, being outside, and making art.
Selina Hardt (she/her)
Currently, Selina is a second-year Ph.D. student in Clinical Psychology at the University of Montana. Prior to her time at UM, she worked as a gender-based violence and health research associate in an international team for the Ludwig Maximilian University. Selina grew up in Germany and India, but received a Bachelor in Psychology and Peace & Global Studies from Earlham College in 2018 and a MSc in Global Mental Health at the London School of Hygiene and Tropical Medicine and King’s College London in 2020. In her free time, she loves reading fantasy books, working out, baking, hiking, making art, traveling, and finding the most delicious croissant near her.
Selina’s research interests pertain to community participatory research and the mental health outcomes of gender-based violence, particularly under-recognized and under-studied forms of traumatic stress such as existential trauma.
Brit King (she/her)
Brittany (Brit) King is a second-year clinical psychology doctoral student in the ET Lab. Growing up in Florida, she earned her Bachelor of Science in Psychology from Florida State University in 2020. Following her undergraduate studies, Brit worked for two years in a post-baccalaureate position at Brown University and Rhode Island Hospital Partial Hospital Program, where she researched treatment outcomes and conducted diagnostic interviews. Her current research in the lab is focused on the application of existential theories to climate change and mental health. Brit aims to unravel the complexities in understanding and addressing the psychological challenges posed by global issues like climate change. Outside of academia, Brit enjoys painting, reading (currently whatever fantasy books Selina recommends), sewing, going for walks, camping, and watching movies at the Roxy.
Ethan Sten (he/him)
Undergraduate Research Assistants
Chris Dums
Chris is currently an undergraduate student studying psychology at the University of Montana. In addition to studying psychology, Chris is passionate about philosophy and the interplay between philosophical and psychological concepts and how they might relate to his future work. Chris hopes to pursue Clinical Psychology, and will be applying to graduate school in the fall of 2025. He is interested in researching the impact of stress and trauma and the associated risk and resilience factors as they relate to posttraumatic stress disorder (PTSD), depression, anxiety and other stress related disorders. When not in school, Chris spends most of his time outdoors with his family or huddled near a wood stove writing poetry.
Lauren Schulte (she/her)
Lauren Schulte is a senior from Spokane, Washington studying Psychology and Climate Change Studies at UM. She is an active member of the Davidson Honors College, Franke Global Leadership Initiative, and UM Advocates! She works for Curry Health Center as a Wellbeing Support Coach. In this position, she supports struggling students and helps facilitate wellbeing events across campus.
She has served as an undergraduate research assistant in Dr. Bryan Cochran’s lab for over a year, but this is her first semester in the ET lab! She hopes to pursue a doctorate in clinical psychology and aims to study eating disorders, mood disorders, or climate change trauma in her future career.
In her free time, she loves to read, cook, and spend time with friends. She also loves to whitewater raft, climb, hike, and camp! She is known for trying every vanilla latte in town and loves to meal prep on the weekends.
Lab Alumni
Phoebe Bean
Phoebe Bean received her PhD in Psychology from UM in 2025. She examined the intersection of climate change and mental health. She is particularly invested in understanding the impact of climate-related distress on marginalized communities and researching interventions to build community resilience in the face of climate change. Deeply passionate about environmental health and sustainable food systems, Phoebe serves on the boards for the Lava Lake Institute for Science and Conservation and the Community Food and Agriculture Coalition. In her spare time, Phoebe enjoys spending her days outside with her wife and dogs, fly rod in hand. Pheobe had an internship at Harvard Medical School/Mass. General Hospital in Boston, MA.
Grace Blintz
Grace Blintz received her bachelor's degree in Psychology from UM in 2025 and was an undergraduate research assistant for the ET Lab. Grace works in multiple childcare settings to gain experience working with children to gain perspective for her future career in psychology. Grace hopes to pursue clinical or school psychology, and has been accepted to UM's School Psychology graduate program. She is interested in research involving deviant tendencies in children. When Grace is not at school, she is teaching dance classes, watching documentaries, or spending time with her family and her dog, Bogey.
Gabriella Graceffo
Gabriella Graceffo graduated with a PhD in Interdisciplinary Studies (English and Psychology) studying the representation of trauma in literature in 2025. This research focus brought her to the ET Lab originally through coursework with Dr. Williamson due to shared interests in trauma and its impacts on individuals, communities, and cultures. She served as the Lab Manager of the ET Lab, editing research manuscripts for APA standards, clarity, coherence, and rhetoric; oversaw project timelines and organization; and managed the website.
Isiah McMillian
Isiah McMillian graduated with a degree in psychology from UM in 2024. During his time at UM, he juggled roles as a resident assistant and a undergraduate psychology research assistant in the ET lab. In his role in the ET lab, he primarily worked to identify points of contact with mental health professionals and quantify existential crises. Isiah's interest in the lab centered around public health and rural psychology, influenced by his personal experiences growing up in a rural setting. He plans to work on his family’s potato farm until Fall 2024, when he will begin a master’s degree in human computer interactions.
Marci Olsen
Marci Olsen recently graduated from UM with her bachelor’s in psychology, having worked as an undergraduate research assistant in this lab. She is a non-traditional student who came to UM in the fall of 2022. Coming with experience in non-profits, education, and government agencies, Marci has worked with populations struggling with housing instability, developmental disabilities, mental health conditions, emotional regulation, and incarceration. She worked on campus with TRiO SSS as a peer mentor. Due to her interest in a smattering of several subjects, Marci self-identifies as a pseudo-nerd. When not focused on her studies, she can be found engaged in a myriad of activities, or just breathing. Marci’s interest in existential trauma revolves around people who have experienced a significant loss of meaning and/or identity as the result of an extreme conflict between rigid ingroup norms and self-concept or lived experiences. Outside of ET, Marci’s research interests lie in working to identify and disentangle the causal elements of both empathy and group boundary formation.
Mackenzie Raiman
Mackenzie Raiman graduated in 2025 with degrees in Psychology and Cognitive Neuroscience. She served the ET Lab as an undergraduate research assistant. She was also a member of the Davidson Honors College. She earned her Associates Degree in Psychology at Flathead Valley Community College in her hometown of Kalispell, Montana, where she was born and raised. In her free time she enjoys swimming, reading books, and taking naps with her cat.