Conspiracy Theories and their Believers
By :
Daniel Stockemer,
and Jean-Nicolas Bordeleau
Release date: Mar 2025
Cambirdge University Press


This Element leverages a comparative approach to understand how conspiracy theories and their believers differ within and across countries. Using original survey data from eight varied cases (Australia, Brazil, Canada, Germany, Lebanon, Morocco, South Africa, and the United States) the authors present specific contemporary conspiracy theories, illustrate how these theories appeal in their national context, and determine whether the characteristics of the typical conspiracy theory believer vary across setting. They first demonstrate that there is a wide range of conspiracy theories, some of which have worldwide reach, whereas others are more context specific. Then, they show that the determinants of individual conspiracism are very similar in the Western world and Brazil, but do not necessarily travel to Lebanon, Morocco and South Africa. Lastly, they summarize the main conclusions of this Element and discuss the need for greater comparative research on conspiracy theories and propose clear areas for future research.
Daniel Stockemer is Full Professor and the Konrad Adenauer Research Chair in Empirical Democracy Studies. His research tackle political behavior, political representation, public opinion, populism and conspiracy theories. In these and related topics, Daniel has published 10 books and more than 170 articles.
Jean Nicolas Bordeleau is a Ph.D. student at the Konrad Adenauer Research Chair in Empirical Democracy Studies at the University of Ottawa. Nick’s research interest are political behavior and democratic attitudes. Among others, Nick has published in Political Psychology, European Political Science and the Election Law Journal.