Heidi Guyer is Senior Public Health Research Scientist at RTI International. Before joining RTI, she was a Senior Survey Director and oversaw data collection on large national and international health research projects at the University of Michigan. She received a PhD in Epidemiology from the University of Michigan and a Master of Public Health from the University of Texas. She has extensive experience in population-based data collection, cross-sectional and longitudinal health surveys, and adapting clinical measures and new technology in health research. Her substantive areas of research have focused on the association between health behaviors, such as sleep and diet quality, and the development of chronic health conditions.