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 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 has been a critic of the Census Bureau’s plans to incorporate sampling in the census. He received a B.S. from the California Institute of Technology and a Ph.D. from Cornell University.

Constance E.Citro is a senior program officer for the Committee on National Statistics. She is a former vice president and deputy director of Mathematica Policy Research, Inc., and was an American Statistical Association/National Science Foundation research fellow at the U.S. Census Bureau. For the committee, she has served as study director for numerous projects, including the Panel on Estimates of Poverty for Small Geographic Areas, the Panel on Poverty and Family Assistance, the Panel to Evaluate the Survey of Income and Program Participation, the Panel to Evaluate Microsimulation Models for Social Welfare Programs, and the Panel on Decennial Census Methodology. Her research has focused on the quality and accessibility of large, complex microdata files, as well as analysis related to income and poverty measurement. She is a fellow of the American Statistical Association. She received a B.A. degree from the University of Rochester and M.A. and Ph.D. degrees in political science from Yale University.

Michael L.Cohen is a senior program officer for the Committee on National Statistics, currently serving as the study director for the Panel on Research on Future Census Methods and staff to the Panel to Review the 2000 Census. He previously assisted the Panel on Estimates of Poverty for Small Geographic Areas. He also directed the Panel on Statistical Methods for Testing and Evaluating Defense Systems. Formerly, he was a mathematical statistician at the Energy Information Administration, an assistant professor in the School



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