Montolio, DanielRiambau Armet, Guillem2025-10-292025-10-292025https://hdl.handle.net/2445/223938We conduct an online survey across four countries of the European Union (Germany, Ireland, Poland, and Spain) to study how the socio-economic determinants of their citizens condition their ability to detect fake headlines and their likelihood of sharing them using social media. Additionally, we analyze the impact of attitudinal and ideological variables on the probability of detecting (and sharing) fake news. Results point to a significant role of some socio-economic and political variables in determining both the probability of detecting and sharing fake news on social media; results also show interesting country heterogeneity. Political headlines are more likely to be misclassified, which underscores the challenge of overcoming ideological biases in media consumption. We highlight the importance of fostering digital literacy, especially among young and more vulnerable individuals, to promote responsible democratic citizenship.49 p.application/pdfengcc-by-nc-nd, (c) Autor1 et al., 2025http://creativecommons.org/licenses/by-nc-nd/3.0/es/Fake newsDesinformacióXarxes socialsFake newsDisinformationSocial networksinfo:eu-repo/semantics/workingPaperinfo:eu-repo/semantics/openAccess