Catalonia is richer and more intelligent than the Spanish average, but hardly any sort of huge outlier.
Could economic reasons really explain that much of their drive for independence?
|Castile and Leon||102.4||$29,682|
The difference really is quite modest relative to the massive north/south disparity you see in Italy.
Just for added effect, here is Spain and Italy compared side by side (GRP per capita on the left, PISA 2009 results on the right).
I have heard from an Italian acquaintance that Northern seccessionist sentiment has died down in the past few years. Hardworking, clever northerners are now readier to tolerate lackadaisical southerners now that Merkel has inundated the place with far more foreign elements. But I suppose it didn’t work that way in Spain.