Supplementary materials to: The changing association between political ideology and closedmindedness: Left and right have become more alike

Supplementary materials to: Acosta, J., & Kemmelmeier, M. (2022). The changing association between political ideology and closedmindedness: Left and right have become more alike. Journal of Social and Political Psychology, 10(2), 657–675. https://doi.org/10.5964/jspp.6751 The Supplementary Materials include all the Appendices referenced throughout the article. Appendix A contains the citations of the articles, books, and datasets used to produce our results. We also reported additional results in Appendix B, which includes the same analyses we report in our results section but reflects the two combined datasets (U.S. and International). Because we had a gap in our data between 1985-1992, Appendix C reports separate analyses for pre-1985 and post-1992 data.