Callum is an incoming first year doctoral student in the Clinical Studies Program at the University of Hawaii at Manoa. He recently graduated Summa Cum Laude from Utah State University, where he simultaneously received a BS in Psychology and a BS in Philosophy. His current research and clinical interests include testing, utilizing, and tailoring third-wave cognitive behavioral interventions — particularly Acceptance and Commitment Therapy —  to better treat individuals from a wide range of populations who have various psychological disorders. Callum is particularly interested in working with individuals who have substance use disorders (SUDs) and other addictive disorders. He also plans to examine how elements of Zen Buddhism and other traditional perspectives can influence our approach to psychology and understanding of human wellbeing. 

Mary L. Hill, Ph.D., is a Licensed Psychologist and Clinical Assistant Professor at the University of North Carolina. She specializes in the treatment of adults with eating disorders and posttraumatic stress disorder (PTSD), integrating mindfulness- and acceptance-based approaches with evidence-based trauma interventions. Dr. Hill completed her doctoral training in Clinical Psychology at Georgia State University under the mentorship of Dr. Akihiko Masuda, where she received extensive training in Acceptance and Commitment Therapy (ACT) and Mindful Self-Compassion. Her clinical internship was completed with the Department of Veterans Affairs, where she gained expertise in evidence-based PTSD treatments, including Prolonged Exposure (PE) and Cognitive Processing Therapy (CPT). Following her internship, Dr. Hill completed a postdoctoral fellowship at Center of Excellence for Eating Disorders (CEED), further refining her specialization in eating disorders and trauma-informed care. Her clinical and research interests focus on the intersection of disordered eating and trauma, with a particular emphasis on values-based interventions and culturally responsive care. Dr. Hill is also deeply committed to clinical training and supervision. She enjoys mentoring psychology trainees at various levels, emphasizing the ethical and skillful delivery of evidence-based therapies. Her supervision style integrates clinical rigor with warmth, fostering professional growth through a foundation of compassion, cultural humility, and contextual behavioral science.

Duckhyn (Duck) Jo, Ph.D. currently serves as a Postdoctoral Research Fellow in the Research on Emotion, Substance Use Treatment Outcomes, Rehabilitation, and Empowerment (RESTORE) Laboratory, directed by Dr. Michael J. Zvolensky at the University of Houston.  He is a clinical scientist dedicated to advancing the understanding of mechanisms of change in cognitive behavioral therapies. Dr. Jo's work centers on modifiable transdiagnostic processes and their application to psychopathology, substance use, and health behavior challenges—particularly within diverse and marginalized populations. To enhance the precision and impact of interventions, he employs advanced methodologies including network analysis, item response theory, Bayesian modeling, machine learning, and large language models (e.g., AI-based treatments). His research aims to bridge methodological innovation with culturally responsive clinical science, fostering scalable, equitable solutions to complex mental health and behavioral health problems.

Dr. Hadrian Mendoza is a clinical fellow in Hematology/Oncology at Yale-New Haven Hospital. He completed his medical education at Yale University, where he received a Hematology Opportunities for the Next Generation of Research Scholars (HONORS) research grant from the American Society of Hematology to investigate applications of B- and T-cell gene rearrangement analysis in the diagnosis of lymphoid neoplasms. Hadrian completed an internship in Pediatrics at Emory University and Children's Healthcare of Atlanta prior to residency in the Yale Traditional Internal Medicine program. His clinical interests include molecular risk stratification and management of myeloproliferative neoplasms, myelodysplastic syndromes, acute myeloid leukemia, and bone marrow failure syndromes.

Hadrian is an avid trumpet player with particular interests in jazz and commercial music. Prior to a career in medicine, he played trumpet and flugelhorn professionally in the Southeast. He has performed and recorded with local and international artists including Lady Gaga, Sam Moore from the soul music duo “Sam & Dave,” Cuban saxophonist Paquito D’Rivera, big band drummer Duffy Jackson, jazz trumpeter and vocalist Joe Gransden, and the Atlanta-based pop/R&B group The Shadowboxers. 

Dr. Amar Mandavia is currently a Medical Informatics Postdoctoral Fellow at the Boston VA Healthcare system. He graduated summa cum laude from Georgia State University with a B.S. in Psychology and an M.A. in Clinical Psychology, with a concentration in research methodology, global mental health, and trauma, from Teachers College (TC), Columbia University. Dr. Mandavia completed his doctoral training in clinical psychology from TC and his predoctoral internship from Beth Israel Deaconess Medical Center and Massachusetts Mental Health Center at Harvard Medical School. His clinical expertise includes treatment of persistent and severe mental illness using evidence-based treatments, including third-wave behavioral and psychodynamic interventions. His primary program of research takes a critical approach to improving the measurement, classification, and identification of mechanisms implicated in adverse health outcomes across individual, interpersonal, and community levels. Dr. Mandavia's secondary line of research examines treatment components, mechanisms of change, and common factors in psychotherapeutic processes. 

Timothy Martin is currently a doctoral student in the Developmental Psychopathology and Clinical Science program at the University of Minnesota, Institute of Child Development. His research interests include developmental cognitive neuroscience and executive function. He is especially interested in educational practices and clinical interventions, such as self-reflection and mindfulness, which promote children’s cognitive functioning. His former research advisors include Dr. Akihiko Masuda of University of Hawai‘i at Manoa, Dr. Ellen Langer at Harvard University, and Dr. Zev Schuman-Olivier at Harvard Medical School. Prior to his studies at the University of Minnesota, Tim worked as a licensed professional counselor (LPCC) in New Mexico both in private practice and as the Director of Outpatient Services at Taos Behavioral Health.