Muñoz (2021) The Catalan Syndrome? Revisiting the Relationship Between Income and Support for Independence in Catalonia
If the reason is not fiscal selfishness, how can we explain the correlation we found between income and support for independence? There are essentially two alternative explanations. The first being that the correlation is merely spurious and has no causal interpretation. Other non‐economic confounding factors (most notably, family origin/language) may explain the observed association. This is what I have tested in the models in which I included the controls. As evident, both in the survey and the aggregate data, these factors account for a large part of the association between income and support for independence.