James M. Lepkowski is Research Professor Emeritus at the Survey Research Center and Professor of Biostatistics at the University of Michigan. He is also Research Professor at the Joint Program in Survey Methodology at the University of Maryland. He received his Ph.D. from the University of Michigan in 1980. His research interests include sampling methods, methods for compensating for missing data, estimation strategies for complex sample survey data, and the effect of interviewer and respondent behavior on the quality of survey data.