Dr. Roy W. Whitmore, vice president of the Social Sciences Division of RTI's Statistics and Epidemiology Unit, has been at RTI since 1980. He is expert in design and analysis of complex probability-based sample surveys. His primary areas of application have been human exposure assessment surveys and postsecondary education studies. He recently served as the Principal Investigator for a US EPA STAR grant that developed a data collection platform for human exposure-related behaviors, including time/activity/location/exertion-level data, dietary data, and data on use of consumer products. He was sampling task leader for such high-visibility EPA exposure assessment studies as studies as the EPA Region 5 field test of the National Human Exposure Assessment Survey and most of the EPA's Total Exposure Assessment Methodology Studies. He has served as task leader for sampling, weighting, imputation, and reporting for several postsecondary education surveys for the National Center for Education Statistics. Dr. Whitmore is a member of the American Statistical Association and the International Society of Exposure Science. He has published in the Journal of Exposure Science and Environmental Epidemiology, Environmental Health Perspectives, Environmental Science and Technology, Atmospheric Environment, Journal of Official Statistics, and Journal of the American Statistical Association.