on the creation and use of linked, longitudinal data on employees and employers. His other research interests include international comparisons of labor market outcomes; executive compensation, again with a focus on international comparisons; bargaining and other wage-setting institutions; and the econometric tools of labor market analysis.

Joe C. Cecil is project director of the Program on Scientific and Technical Evidence in the Division of Research of the Federal Judicial Center (FJC), in Washington, DC. In that position he is responsible for judicial education and training about scientific and technical evidence and the lead staff for the FJC’s Reference Manual on Scientific Evidence, which is the primary source book on scientific evidence for federal judges. He is the author of numerous publications concerning legal standards affecting exchange of information for research purposes. Other areas of interest include the use of scientific and technical evidence in litigation, variations in procedures used by federal courts of appeals, and management of mass tort litigation. He holds a Ph.D. degree in psychology and a J.D. degree, both from Northwestern University.

Constance F. Citro (Staff Director) is director of 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 to Review the 2000 Census, 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 has a B.A. degree from the University of Rochester and M.A. and Ph.D. degrees in political science from Yale University.

George T. Duncan is a professor of statistics in the H. John Heinz III School of Public Policy and Management and the Department of Statistics at Carnegie Mellon University. His current research work centers on information technology and social accountability. He has lectured in Brazil, Italy, Turkey, Ireland, Mexico and Japan, among other places. Duncan chaired the Panel on Confidentiality and Data Access of the National Academies (1989-1993), which produced Private Lives and Public Policies: Confidentiality and Accessibility of Government Statistics, and he chaired the