Soomi Lee, Ph.D., an associate professor in the Department of Human Development and Family Studies at Penn State is the director of the STEALTH lab. Dr. Lee and her collaborators examine the role of sleep in the link between stress and health across adulthood. Dr. Lee has expertise in the substantive areas of sleep, work-related stress, chronic pain, activity diversity, and healthy aging. She has extensive experience in measuring sleep using self-report and actigraphy methods and assessing daily experiences using intensive micro-longitudinal designs.