Our Team

Gregory Park
Gregory Park is postdoctoral fellow in the Department of Psychology at University of Pennsylvania. He received a B.S. in Psychology & Philosophy from Case Western Reserve University and a Ph.D. in Psychology from Vanderbilt University. Trained as a quantitative psychologist, his interests include personality, well-being, novel methods of assessment, and data visualization.
Nansook Park, PhD, NCSP
Nansook Park, PhD, NCSP, is a professor of psychology, director of Michigan Positive Psychology Center at the University of Michigan, and a nationally certified school psychologist. Her work in collaboration with the late Dr. Chris Peterson in studying character strengths and virtues is considered the most ambitious undertaking within the field of positive psychology.
Katherine Bevans, PhD
Katherine Bevans, PhD, is an assistant research professor of pediatrics at the Children's Hospital of Philadelphia.
Julia K. Boehm, PhD
Julia K. Boehm, PhD, is a postdoctoral research fellow in the Department of Social and Behavioral Sciences at Harvard School of Public Health. Boehm’s research centers broadly on well-being and investigates how people can thrive both mentally and physically.
Steven N. Blair, PED
Steven N. Blair, PED, is a professor in the Departments of Exercise Science and Epidemiology and Biostatistics at the Arnold School of Public Health, University of South Carolina. His research examines the role of physical activity on all-cause mortality; in preventing or reducing the risk of cardiovascular diseases, cancer, and type 2 diabetes; and in promoting independent and quality of life in older adults.
Margaret Kern, PhD
Margaret L. Kern, PhD, is a postdoctoral fellow at the Positive Psychology Center at the University of Pennsylvania. Her research incorporates a lifespan perspective, quantitative methods, and interdisciplinary collaboration to study individual and social factors that impact individual trajectories toward Positive Health and resilience.
Margaret Kern, PhD
Margaret L. Kern, PhD, is a postdoctoral fellow at the Positive Psychology Center at the University of Pennsylvania. Her research incorporates a lifespan perspective, quantitative methods, and interdisciplinary collaboration to study individual and social factors that impact individual trajectories toward Positive Health and resilience.
Eric Kim
Eric Kim is a PhD student at the University of Michigan studying clinical psychology. His research interests include topics in psychological well-being, aging, health (especially cardiovascular health), and advanced statistical methods. He has authored papers in a range of journals including the Journal of Behavioral Medicine, Journal of Consulting and Clinical Psychology, Social Science & Medicine, and Stroke.
Darwin R. Labarthe, MD, MPH, PhD
Darwin Labarthe, MD, MPH, PhD is professor of preventive medicine in the Department of Preventive Medicine, Northwestern University Feinberg School of Medicine. Labarthe’s professional activities focus on epidemiology and prevention of cardiovascular diseases, beginning in childhood.
Elizabeth Steinberg, MA
Elizabeth Steinberg, MA is currently in her fourth year of graduate studies at Temple University. She is broadly interested in the influences of social, biological, and contextual factors on the development of externalizing behavior disorders in children.

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