Nalini Ravishanker is Professor in the Department of Statistics at the University of Connecticut (UConn), Storrs. She has a PhD in Statistics and Operations Research from the Stern School of Business, New York University, and a B.Sc. in Statistics from Presidency College, Madras. Her primary area of research is time series analysis. She has over 150 peer-reviewed publications, two books, and one edited volume. She is a Fellow of ASA, AAAS, CASE, and elected member of ISI. She served as President of ISBIS (2017-2019) and is President-elect of ISI (2025-2027).

Federico Polidoro is the Program Manager of the Center for Development Data, a hub dedicated to fostering methodological innovation and strengthening countries’ capacity in household surveys. He joined the World Bank (2023), after a long experience in the Italian national statistical Institute (2012-2016), where he was the head of Consumer Price Division and since April 2016 the head of the Division Integrated System on economic conditions and consumer prices.

Irene Toma is a development economist who works as a consultant for the World Bank, as well as other international organizations and research institutions, with experience both at field and headquarters levels. In recent years, she has worked on different projects, focusing on wealth, gender, agriculture, and food security. She is a co-author of the World Bank’s Guidelines for Measuring Wealth in Household Surveys in Low- and Middle-Income Countries, published under the aegis of the Inter-Secretariat Working Group on Household Surveys.

Giovanni D’Alessio was a Lead Statistician at the World Bank’s Center for Development Data (C4D2), where he coordinated the work of researchers developing the Guidelines for Measuring Wealth in Household Surveys in Low- and Middle-Income Countries. He was Head of the Sample Survey Division of the Economics and Statistics Department at the Bank of Italy for 15 years. He has written extensively on wealth, income and inequality. He has a PhD in Methodological Statistics from the Sapienza University of Rome. 

Elizabeth J. Zechmeister is Cornelius Vanderbilt Professor of Political Science and Senior Associate Provost for Research & Development at Vanderbilt University. She has led two award-winning international survey projects: the AmericasBarometer and the Comparative Study of Electoral Systems. She has published three books and more than 50 articles and chapters on public opinion, electoral behavior, and survey methods. She is a former president of the Elections, Public Opinion, and Voting Behavior section of the American Political Science Association.

Joost Kappelhof is the head of the department of Methodology, Information management and Data at the Netherlands Institute for Social Research/SCP, an independent government research institute of the Dutch government. He is a survey methodologist by training and have been working in the field since 2002. His expertise is on survey design (including inclusive survey design/respondent centered design) and survey data quality among hard to survey, hard to reach and hidden populations as well as cross-national and cross-cultural comparative surveys.