Regional business cycle synchronization in Europe?

We analyse regional business cycle synchronization in the Euro Area, using gross value added in 53 NUTS 1 regions for a period of 30 years (1975–2005), detrended by Hodrick–Prescott and the Christiano–Fitzgerald filters. We conclude that, on average, synchronization has increased for the period considered with exceptions during the eighties and the beginning of the nineties. Still, the correlation of the business cycle in some regions with the benchmark remained low or even decreased. Our findings also support the hypothesis of the existence of a ‘national border’ effect.