Do the Spanish regions converge? A unit root analysis for the HDI of the Spanish regions

This article studies the possible stochastic convergence between the Spanish regions in 1980–2010. The application of unit root techniques to the new Human Development Index recently calculated in Herrero et al. (2013) allows us to show that the evolution of the Spanish economy can be better understood as the sum of divergent forces rather than as a group of convergent regions. Similar conclusions can be drawn when the per capita GDP is used, although these two variables exhibit different patterns of behaviour at the end of the sample. Finally, we also observe that the distance between northern and southern regions has increased since 2000.