Subjective Determinants of Attitudes Towards Euro Adoption in Non-Euro Countries. A Machine Learning Approach
DOI:
https://doi.org/10.47743/saeb-2026-0026Keywords:
Euro, machine learning, Eurobarometer, Euro adoption.Abstract
The adoption of the euro is a sensitive topic in the European Union (EU) member states that are not yet part of the Euro Area. Public perceptions and attitudes are influenced not only by objective economic factors, but also by subjective factors, such as the level of trust in institutions, perceptions of prices changes or the mixed feelings about EU. This paper investigates the subjective determinants of attitudes towards euro adoption among EU member states before euro adoption, using an approach based on machine learning algorithms. The analysis is based on Flash Eurobarometer data for 2011–2024 and includes only observations from countries in years before they adopted the euro. The results show that price-related perceptions consistently emerge as the most important predictor of attitudes towards euro adoption, while concerns related to national identity and economic control are also strongly associated with lower levels of support. In addition, self-perceived knowledge about the euro appears to be linked to more favourable attitudes. The study contributes methodologically through the comparative application of machine learning techniques and empirically by identifying the main subjective factors associated with public support for euro adoption in the EU.
References
Allam, M. S., & Goerres, A. (2011). Economics, Politics or Identities? Explaining Individual Support for the Euro in New EU Member States in Central and Eastern Europe. Europe-Asia Studies, 63(8), 1399–1424. http://dx.doi.org/10.1080/09668136.2011.601110
Angelini, P., & Lippi, F. (2006). Did Inflation Really Soar After the Euro Cash Changeover? Indirect Evidence from ATM Withdrawals. Bank of Italy Economic Research Paper, (No. 581). Retrieved from http://dx.doi.org/10.2139/ssrn.901941
Banducci, S. A., Karp, J. A., & Loedel, P. H. (2009). Economic Interests and Public Support for the Euro. Journal of European Public Policy, 16(4), 564–581. http://dx.doi.org/0.1080/13501760902872643
Bergbauer, S., Hernborg, N., Jamet, J. F., Persson, E., & Schölermann, H. (2020). Citizens’ Attitudes Towards the ECB, the Euro and Economic and Monetary Union. ECB Economic Bulletin. Retrieved from https://www.ecb.europa.eu/press/economic-bulletin/articles/2020/html/ecb.ebart202004_01~9e43ff2fb2.en.html
Breiman, L. (1996). Bagging Predictors. Machine Learning, 24(2), 123–140. http://dx.doi.org/10.1023/A:1018054314350
Breiman, L. (2001). Random Forests. Machine Learning, 45(1), 5–32. http://dx.doi.org/10.1023/A:1010933404324
Breiman, L., Friedman, J. H., Olshen, R. A., & Stone, C. J. (2017). Classification And Regression Trees (1st Edition ed.). New York: Routledge. http://dx.doi.org/10.1201/9781315139470
Carella, B. (2023). Latest Developments in Social Europe: Promising Steps in Need for Future Monitoring. Journal of Common Market Studies, 61(S1), 125–135. http://dx.doi.org/10.1111/jcms.13556
Conflitti, C. (2011). Opinion Surveys on the Euro: A Multilevel Multinomial Logistic Analysis. SSRN Electronic Journal, 2011(August). http://dx.doi.org/10.2139/ssrn.1700249
Cornille, D., & Stragier, T. (2007). The Euro, Five Years Later : What has Happened to Prices ? Retrieved from https://www.nbb.be/doc/ts/publications/economicreview/2007/ecorevii2007e_h1.pdf
Dandashly, A., & Verdun, A. (2018). Euro Adoption in the Czech Republic, Hungary and Poland: Laggards by Default and Laggards by Choice. Comparative European Politics, 16(3), 385–412. http://dx.doi.org/10.1057/cep.2015.46
Dragoi, V. E., Constantinescu, L. M., & Preda, L. E. (2017, 9–10 June). Premises and Consequences of the Adoption of the Euro as the Single Currency in Romania. Paper presented at the International Scientific Conference Risk in Contemporary Economy, Galati, Romania.
Tratatul privind Uniunea Europeană, C 191 C.F.R. (1992).
Fernández, J. J., Teney, C., & Díez Medrano, J. (2023). Mechanisms of the Effect of Individual Education on Pro‐European Dispositions. Journal of Common Market Studies, 62(5), 1119–1140. http://dx.doi.org/10.1111/jcms.13560
Gamble, A. (2006). Euro Illusion or the Reverse? Effects of Currency and Income on Evaluations of Prices of Consumer Products. Journal of Economic Psychology, 27(4), 531–542. http://dx.doi.org/10.1016/j.joep.2006.01.006
Gamble, A., Gärling, T., Charlton, J., & Ranyard, R. (2002). Euro Illusion: Psychological Insights into Price Evaluations with a Unitary Currency. European Psychologist, 7(4), 302–311. http://dx.doi.org/10.1027//1016-9040.7.4.302
Guo, C. Y., & Lin, Y. J. (2023). Random Interaction Forest (RIF)–A Novel Machine Learning Strategy Accounting for Feature Interaction. IEEE Access : Practical Innovations, Open Solutions, 11, 1806–1813. http://dx.doi.org/10.1109/ACCESS.2022.3233194
Hobolt, S. B., & Wratil, C. (2015). Public Opinion and the Crisis: The Dynamics of Support for the Euro. Journal of European Public Policy, 22(2), 238–256. http://dx.doi.org/10.1080/13501763.2014.994022
James, G. M., Witten, D., Hastie, T. J., & Tibshirani, R. (2013). An Introduction to Statistical Learning : with Applications in R (1st edition ed. Vol. 103): Springer. http://dx.doi.org/10.1007/978-1-4614-7138-7
Jonung, L., & Conflitt, C. (2008). Is the Euro advantageous? Does it foster European Feelings? Europeans on the Euro after Five Years. Retrieved from Belgium: https://lup.lub.lu.se/search/ws/files/75680890/publication12337_en.pdf
Jurado, I., Walter, S., Konstantinidis, N., & Dinas, E. (2020). Keeping the Euro at Any Cost? Explaining Attitudes toward the Euro-Austerity Trade-off in Greece. European Union Politics, 21(3), 383–405. http://dx.doi.org/10.1177/1465116520928118
Kam Ho, T. (1995, 14–16 Aug. ). Random Decision Forests. Paper presented at the Proceedings of 3rd International Conference on Document Analysis and Recognition, Monreal, Canada.
Kuhn, M., & Johnson, K. (2013). Applied Predictive Modeling: Springer New York. http://dx.doi.org/10.1007/978-1-4614-6849-3
Kuyoro, A. O., Ogunyolu, O. A., Ayanwola, T. G., & Ayankoya, F. Y. (2022). Dynamic Effectiveness of Random Forest Algorithm in Financial Credit Risk Management for Improving Output Accuracy and loan Classification Prediction. Ingénierie des systèmes d'information, 27(5), 815. http://dx.doi.org/10.18280/isi.270515
Lunn, P., & Duffy, D. (2010). The Euro through the Looking-Glass: Perceived Inflation Following the 2002 Currency Changeover. Retrieved from EconStor, Dublin: https://www.econstor.eu/bitstream/10419/50046/1/632221747.pdf
Mahalani, A. J., & Rifai, N. A. (2022). Least Absolute Shrinkage and Selection Operator (LASSO) untuk Mengatasi Multikolinearitas pada Model Regresi Linear Berganda. Bandung Conference Series: Statistics, 2(2), 119–125. http://dx.doi.org/10.29313/bcss.v2i2.3438
Mundell, R. (1961). A Theory of Optimum Currency Areas. The American Economic Review, 51(4), 657–665. Retrieved from http://www.jstor.org/stable/1812792.
Parizek, M. (2011). Identities, not Money: CEE Countries’ Attitudes to the Euro. Central European Journal of International and Security Studies, 5(1), 115–135. Retrieved from https://ssrn.com/abstract=2094383
Proctor, C. (2023). EMU and the Treaty on European Union. In C. Proctor (Ed.), Mann and Proctor on the Law of Money (8th ed., pp. 650–671): Oxford University Press. http://dx.doi.org/10.1093/law/9780198804925.003.0026
Quinlan, J. R. (1986). Induction of Decision Trees. Machine Learning, 1(1), 81–106. http://dx.doi.org/10.1023/A:1022643204877
Roth, F., Baake, E., Jonung, L., & F., N.-L. D. (2022). Revisiting Public Support for the Euro, 1999–2017: Accounting for the Crisis and the Recovery. In F. Roth (Ed.), Public Support for the Euro. Contributions to Economics. (Vol. 2, pp. 21–45): Springer. http://dx.doi.org/10.1007/978-3-030-86024-0_2
Roth, F., & Jonung, L. (2022). Public Support for the Euro and Trust in the ECB: The First Two Decades of the Common Currency. In F. Roth (Ed.), Public Support for the Euro. Contributions to Economics (Vol. 2, pp. 1–19): Springer. http://dx.doi.org/10.1007/978-3-030-86024-0_1
Roth, F., Jonung, L., & Most, A. (2023). COVID-19 and Public Support for the Euro. Empirica, 51(2024), 61–86. http://dx.doi.org/10.1007/s10663-023-09596-7
Roth, F., Jonung, L., & Nowak‐Lehmann, D. F. (2015). Crisis and Public Support for the Euro, 1990–2014*. Journal of Common Market Studies, 54(4), 944–960. http://dx.doi.org/10.1111/jcms.12338
Szőcs, C. E. (2015). Public Attitudes towards Monetary Integration in Seven New Member States of the EU. Politics in Central Europe, 11(1), 115–130. http://dx.doi.org/10.1515/pce-2015-0006
Therneau, T. M., Atkinson, E. J., & Foundation, M. (2023). An Introduction to Recursive Partitioning Using the RPART Routines.61, 453. Retrieved from https://cran.r-project.org/web/packages/rpart/vignettes/longintro.pdf
Tibshirani, R. (1996). Regression Shrinkage and Selection via the Lasso. Journal of the Royal Statistical Society. Series B, Statistical Methodology, 58(1), 267–288. http://dx.doi.org/10.1111/j.2517-6161.1996.tb02080.x
Todorov, I. (2023). Is Bulgaria Ready to Join the Euro Area – Income Convergence or Similarity of Shocks Criteria? Yearbook of UNWE, 61(2), 95–105. http://dx.doi.org/10.37075/YB.2023.2.05
Verdun, A. (2005). A History of Economic and Monetary Union. In M. P. Van der Hook (Ed.), Handbook of Public Administration and Policy in the European Union (1st ed., pp. 675–718): Routledge. http://dx.doi.org/10.1201/b15745.pt5
Zhou, Z. (2024). The Impact of Geopolitical Conflicts on the Volatility of the International Financial Markets. Modern Economics & Management Forum, 5(4), 635. http://dx.doi.org/10.32629/memf.v5i4.2536
Downloads
Published
Issue
Section
License
Copyright (c) 2026 Ana-Maria Giurgi, Carmen Pintilescu, Ciprian Ionel Turturean

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
All accepted papers are published on an Open Access basis.
The Open Access License is based on the Creative Commons license.
The non-commercial use of the article will be governed by the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License as currently displayed on https://creativecommons.org/licenses/by-nc-nd/4.0
Under the Creative Commons Attribution-NonCommercial-NoDerivatives license, the author(s) and users are free to share (copy, distribute and transmit the contribution) under the following conditions:
1. they must attribute the contribution in the manner specified by the author or licensor,
2. they may not use this contribution for commercial purposes,
3. they may not alter, transform, or build upon this work.




