Key Dates

Keynote Bios

Gordon Willis Gordon Willis has worked for more than 25 years to develop and evaluate methods in questionnaire design, cognitive interviewing, and survey pretesting. He is a cognitive psychologist at the National Cancer Institute, National Institutes of Health, and previously worked at both the Research Triangle Institute National Center for Health Statistics/U.S. Centers for Disease Control and Prevention. He attended Oberlin College and Northwestern University.

Gordon has written the books Cognitive Interviewing: A Tool for Improving Questionnaire Design (2005) and Analysis of the Cognitive Interview in Questionnaire Design (2015). He has coauthored the Questionnaire Appraisal System for evaluating draft survey questions and the Cognitive Interviewing Reporting Framework for reporting cognitive testing results. He teaches questionnaire design and survey pretesting through short courses in cognitive interviewing at the Joint Program in Survey Methodology (JPSM) and Odum Institute of The University of North Carolina, as well as for the American Association for Public Opinion Research. He also holds an adjunct faculty position at the Uniformed Services University of the Health Sciences in Bethesda, Maryland.

Gordon's work involves the development of surveys in cancer and other health topics and focuses on questionnaire development, pretesting, and evaluation. His research interests focus on socio-cultural issues in self-report surveys, with an emphasis on the adaptation of empirical methods such as cognitive interviewing and behavior coding to the development of survey questions that exhibit cross-cultural comparability, on the development of best practices for survey translation into multiple languages, and on the conduct of surveys of hard-to-survey populations.

Mario Callegaro Mario Callegaro is senior survey research scientist at Google UK, London, in the quantitative marketing team. He works on web and telephone surveys focusing on survey and market research projects, including measuring advertisers' customer satisfaction. He also consults with numerous internal teams regarding survey design, sampling, questionnaire design, and online survey programming and implementation.

Mario holds a BA in sociology from the University of Trento, Italy, and an MS and PhD in survey research and methodology from the University of Nebraska, Lincoln. Prior to joining Google, he worked as a survey research scientist for Gfk-Knowledge Networks, a company managing a probability-based online panel representative of the U.S. population.

Mario has published numerous peer-reviewed papers and book chapters on web surveys, telephone and cell phone surveys, question wording, polling and exit polls, event history calendars, longitudinal surveys, and survey quality. He is associate editor of Survey Research Methods and on the editorial board of the International Journal of Market Research.

Mario coauthored (2014) an edited book, titled Online Panel Research: A Data Quality Perspective. He also just completed a monograph titled Web Survey Methodology in June 2015.