Kirk Wolter, Ph.D., is Executive Vice President with the National Opinion Research Center, an affiliate of the University of Chicago, and is also Professor, Department of Statistics, University of Chicago. During his career, he has led or participated in the design of many of America's largest and most important information systems, including the Current Business Surveys, the Current Employment Statistics program, the Current Population Survey, the 1980 and 1990 Decennial Censuses, the National Longitudinal Survey of Youth 1997, and the National Resources Inventory. He led the conversion of major market research surveys to scanning-based methods of data collection, both in American and in many of the countries in Western Europe. He currently works with the Centers for Disease Control and Prevention to conduct the National Immunization Survey, a study of childhood immunization and one of the world's largest RDD (random digit dialing) telephone surveys.