ROBERT M. GROVES is presently Associate Director for Statistical Design, Methodology, and Standards, Department of Commerce, U.S. Bureau of the Census. He has taught at the University of Michigan since 1975 and is author of several books, the most recent of which is Survey Errors and Survey Costs (Wiley, 1989).
LARS E. LYBERG is Head of the Secretariat for International Research at Statistics Sweden, Stockholm, Sweden, where he has worked since 1968. He is also Chief Editor of the Journal of Official Statistics. Dr. Lyberg is President–Elect (1993) of the International Association of Survey Statisticians.
NANCY A. MATHIOWETZ is Special Assistant Director for Statistical Design, Methodology, and Standards at the U.S. Bureau of the Census. Prior to joining the Census Bureau in 1990, Dr. Mathiowetz worked at Westat and the Agency for Health Care Policy and Research.
SEYMOUR SUDMAN is the Walter A. Stellner Professor of Marketing and Deputy Director of the Survey Research Laboratory at the University of Illinois, Urbana–Champaign. He is past President of the American Association for Public Opinion Research.