Department of Agriculture Human Nutrition Information Service. She has also done consulting for the U.S. Environmental Protection Agency, the National Pork Producers Council, and is an affiliate for the Law and Economics Consulting Group. At present, Dr. Carriquiry is investigating the statistical issues associated with the Third National Health and Nutrition Examination Survey (NHANES III) and she has recently completed reports on improving the USDA's food intake surveys and methods to estimate adjusted intake, and biochemical measurement distributions for NHANES III. Dr. Carriquiry is the current Program Chair of the International Society for Bayesian Analysis and is an elected member of the International Statistical Institute. She is editor of Statistical Science, and serves on the Board of Directors of the National Institute of Statistical Science and of the International Society for Bayesian Analysis. Her research interests include nutrition and dietary assessment, Bayesian methods and applications, mixed models and variance component estimation.

BARBARA L. DEVANEY, Ph.D., is an economist and senior fellow at Mathematica Policy Research in Princeton, New Jersey. Her substantive expertise is in the areas of food assistance and nutrition policy and child health policy and programs. She has conducted several studies of the school nutrition programs, the Food Stamp Program, and the Special Supplemental Nutrition Program for Women, Infants and Children (WIC). Dr. Devaney also serves on the advisory board for the Maternal and Child Health Nutrition Leadership Training Program and was Visiting Professor for UCLA' s program where she taught classes on food and nutrition assistance policy. She previously served as a member of the Institute of Medicine 's Committee on Scientific Evaluation of the WIC Nutrition Risk Criteria. Dr. Devaney received her Ph.D. in economics from the University of Michigan.

JOHANNA T. DWYER, D.Sc., R.D., is director of the Frances Stern Nutrition Center at New England Medical Center and professor in the Departments of Medicine and of Community Health at the Tufts Medical School and School of Nutrition Science and Policy in Boston. She is also senior scientist at the Jean Mayer U.S. Department of Agriculture Human Nutrition Research Center on Aging at Tufts University. Dr. Dwyer's work centers on life cycle-related concerns such as the prevention of diet-related disease in children and adolescents and maximization of quality of life and health in elderly adults. She also has a long-standing interest in vegetarian and other alternative lifestyles. Dr. Dwyer is currently the editor of Nutrition