Meet The Team
Ivan Vargas, PhD
Dr. Ivan Vargas is an Assistant Professor of Psychological Science at the University of Arkansas. He completed a postdoctoral fellowship at the Behavioral Sleep Medicine Program and the Center for Sleep and Circadian Neurobiology at the University of Pennsylvania School of Medicine. Dr. Vargas' research interests focus on the etiology and treatment of insomnia. For example, his research is currently supported by an NIH career development award funded by the National Heart, Lung, & Blood Institute (K23HL141581). His work also includes a number of other projects that evaluate behavioral interventions for sleep (e.g., cognitive behavioral therapy for insomnia or CBT-I).
Jamie Walker, MA
Jamie Walker is currently pursuing her Ph.D. in Clinical Psychology at The University of Arkansas. She received her M.A. in Counseling Psychology from Texas Woman’s University and her B.A. in Sociology from The University of Texas at Arlington. Jamie has broad research interests in Health Psychology and Behavioral Sleep Medicine. Her work examines the biopsychosocial correlates of sleep and health, with a focus on the underlying mechanisms at the intersection between insomnia, stress, inflammation, and chronic illness.
Mara Egeler is a third-year student in the Clinical Psychology program at the University of Arkansas. She completed her undergraduate studies at Saint Mary’s College in Indiana where she earned her B.A. in Psychology. Mara is interested in Behavioral Sleep Medicine and looks to focuses her research on the relationship between insomnia, depression, and cardiovascular health.
Veronica is a second-year doctoral student in the Clinical Psychology program at the University of Arkansas. She also completed her B.A. in Psychology at the UofA. Veronica's research currently focuses on mobile app-based interventions for sleep disorders and symptom reduction in populations with insomnia.
Harrison Dickens is currently pursuing his Ph.D. in Clinical Psychology at the University of Arkansas. He received his B.S. in Psychology from Mississippi College. Harrison’s research interests are broadly focused on stress exposure, stress reactions, and how these patterns influence mental and physical health outcomes. He is interested in exploring contextual and historical factors that influence psychological and physiological stress responses.
Arash Assar is a first-year student pursuing his Ph.D. in Clinical Psychology at the University of Arkansas. Before this, he received his master’s in Clinical and Quantitative Psychology at Ball State University and a master’s in Sport Psychology from Miami University of Ohio. Broadly, Arash is interested in investigating protective cognitive and behavioral factors and interventions against stress-related sleep disturbance in athlete and non-athlete populations.
Olivia Wier is from Monroe, Louisiana, and is a senior at the University of Arkansas. She is pursuing a double major in psychology and biology, with a minor in medical humanities. Olivia is working towards graduating in 2024 and hopes to attend Medical School after graduation.
Marissa Kosir is from Edmond, Oklahoma, and is a sophomore at the University of Arkansas. She is pursuing a psychology major and a minor in social work. Marissa is working towards graduating in 2025 and is hoping to attend graduate school for Counseling Psychology. She is interested in abnormal psychology including post-traumatic stress, substance abuse, depression, and anxiety disorders, and is hoping to pursue that interest by becoming a Military Counselor.
I am a second year student at the UofA and I'm from Siloam Springs, AR. I'm working on my Bachelors degree in Psychology. My goals are to attend graduate school and study consciousness or cognitive science.
Deborah is from Dallas, Texas and a junior at the University of Arkansas. She is pursuing a major in public health with a minor in biology with hopes to become an ophthalmologist one day. Deborah Devaraj is interested in psychological research and enjoyed understanding and learning about how stress impacts sleep levels.
Khushi Mehta is from Bentonville Arkansas, and she is a Freshman who plans to major in Psychology and Minor in Biology and Criminal Justice. Khushi plans to go to PA school and attain her master's degree after graduating college. Outside of school Khushi spends most of her time working at the hospital, dancing and simply relaxing.
Allie Doner is from Bentonville, Arkansas and is a freshman at the University of Arkansas. She is working on a bachelor's in psychology and hoping to continue her education in graduate school. She joined the lab to get hands on experience in research and learn more about both stress and abnormal psychology.
Cameron is a sophomore Psychology major from Jonesboro, Arkansas. She is planning on pursuing her education in graduate school and hopes to go into clinical psychology. Cameron is interested in studying anxiety disorders, substance abuse, and memory. Outside of being a student, she enjoys to paint, read, and cheer on the Razorbacks.
Milo is from Mount Vernon, Texas and is a sophomore student majoring in Psychology. After she obtains her bachelor's degree, she is hoping to pursue a master's in Environmental Psychology or Ecopsychology. Milo ultimately would like to help others understand how important it is to take care of our earth, and conduct research in other countries to highlight the differences between sustainability practices around the world.
Ethan is a senior with a major in psychology, mathematics, and music. Currently, his research interests are in the interplay between hormonal contraceptives and sleep pathologies, both clinical and sub-clinical. After graduation, he intends on pursuing graduate school to obtain a PhD in Neuroscience. Outside of the lab, he enjoys playing piano, composing, and learning extraneous subjects.