Methodologies. Earlier, he worked at the RAND Corporation, where he examined and coauthored a number of studies on social policy issues. His work with RAND’s Child Policy Project included research on such topics as prenatal substance abuse, adolescent drug use and the importance of social bonding among different ethnic groups, and the effects of the availability of condoms in a high school in Los Angeles. Dr. Bell earned a B.S. in mathematics from Harvey Mudd College and an M.S. from the University of Chicago and a Ph.D. from Stanford University, both in statistics.

Norman M. Bradburn is the assistant director of the National Science Foundation for Social, Behavioral and Economic Sciences. Formerly, he held positions as a senior vice president for research of the National Opinion Research Center (NORC) at the University of Chicago, director of NORC, and provost of the University. In his work as a social psychologist he has focused on the areas of survey and questionnaire design and related fields. He is also a past member of the Commission on Behavioral and Social Sciences and Education and the Committee on National Statistics and chaired the Panel to Evaluate Alternative Census Methodologies. He is a fellow of the American Statistical Association, the International Statistical Institute, and the American Association for the Advancement of Science, and a member of the American Association for Public Opinion Research and the World Association for Public Opinion Research. He received B.A. degrees from the University of Chicago and Oxford University and M.A. and Ph.D. degrees in clinical and social psychology from Harvard University.

Lawrence D. Brown is the Miers Bush professor of the Department of Statistics at the Wharton School at the University of Pennsylvania. He is a member of the National Academy of Sciences. He is also a member of the National Research Council’s Committee on National Statistics and a former member of the National Research Council’s Commission on Physical Sciences, Mathematics, and Applications and its Board on Mathematical Sciences. He was a critic of the Census Bureau’s plans to incorporate sampling in the census. He is a fellow of the American Statistical Association and is a fellow and past president of the Institute of Mathematical Statistics. He received a B.S. from the California Institute of Technology and a Ph.D. from Cornell University.

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