Roel Popping taught statistics and methodology courses including text analysis at the Department of Sociology of the University of Groningen, the Netherlands, until 2013. Afterwards, he served as a Visiting Professor at the Department of Political Science of the Central European University, Budapest, Hungary, for four years. His research interests include methodology, with a specialty in text analysis and the study of agreement, their application in research on historical shifts in public opinion and values, primarily in the context of post-1989 Central and Eastern Europe, as well as decision-making for negotiation processes.