Kristen Miller Illustrator, Author & Editor

Kristen Miller, PhD, is Director of the Questionnaire Design Research Laboratory, National Center for Health Statistics (NCHS). She designs and implements research projects on data quality and comparability, question response, questionnaire design, and cognitive methods theory and methodology. Dr. Miller is a coeditor of Question Evaluation Methods: Contributing to the Science of Data Quality, also published by Wiley.

Stephanie Willson, PhD, is Senior Research Methodologist at the Questionnaire Design Research Laboratory, NCHS. Her research interests include the study of construct validity in survey questions and the methodological evaluation of cognitive interviewing, with particular emphasis on data collection and data analysis.

Valerie Chepp, PhD, is Assistant Professor in the Department of Sociology at Hamline University. Dr. Chepp has 5 years of experience working as a research methodologist at the Questionnaire Design Research Laboratory, NCHS, and her research interests include cultural sociology, theories of inequality and social change, and qualitative research methods.

José-Luis Padilla, PhD, is Professor in the Department of Social Psychology at University of Granada, Spain. His research interests include cross-cultural psychology, psychometrics, and social research methods.