Post-Doctoral Fellows

NIDDK T32 Post-doctoral Fellow, Barbara Davis Center for Diabetes

Holly O’Donnell, Ph.D.

Dr. O’Donnell is an NIDDK-funded T32 post-doctoral fellow under the mentorship of Dr. Driscoll at the Barbara Davis Center in the Department of Pediatrics at the University of Colorado Anschutz Medical Campus. She earned her PhD in Clinical Psychology at University of Colorado Denver in 2020, at which time she was recognized as the Outstanding Graduate Student in the College of Liberal Arts & Sciences. As a graduate student, she worked with Dr. Driscoll at the Barbara Davis Center for Diabetes as both a clinical trainee and graduate research assistant. Her dissertation examined fear of hypoglycemia and depressive symptoms as barriers to implementing an adherence-promoting intervention in youth with type 1 diabetes. As an advanced graduate student, she served as the interventionist for an NIDDK-funded RCT implementing integrated behavioral health services in the type 1 diabetes clinic visit for high-risk youth. She completed her predoctoral internship at Harvard Medical School/Boston Children’s Hospital from 2019-2020, before returning to Colorado She has a specific interest in integrated care for children with medical conditions and developing interventions to address psychosocial barriers to adherence in order to optimize health outcomes in pediatric patients.


Tarrah B Mitchell, Ph.D.

Dr. Mitchell is a Clinical Child/Pediatric Psychology Postdoctoral Fellow in the Department of Clinical and Health Psychology at the University of Florida. Dr. Mitchell earned her Ph.D. in Clinical Child Psychology from the University of Kansas in 2018, following a pre-doctoral internship specializing in pediatric psychology at the University of Florida Health Science Center. Dr. Mitchell’s research focuses on understanding the bidirectional relationships among children’s physical, psychological, social, and academic functioning (health-related quality of life) and their weight-related health behaviors, such as disordered eating, physical activity, and sedentary behavior. An additional research line focuses on strategies to accurately assess these concepts and behaviors in youth. Clinically, Dr. Mitchell provides inpatient and outpatient services for children, adolescents, and young adults with chronic medical conditions (e.g., diabetes, cancer, inflammatory bowel disease) within multi-disciplinary environments to address medical adherence, adjustment concerns, and psychological needs.