In this paper we test the presence of β-convergence among Italian regions, in the period 1980-2003, in the presence of a trend break in the series following the Vogelsang and Tomljanovich approach (2002). The break year is considered both known and endogenously estimated from the data. When we consider a known trend break date model, the presence of a convergence process for most of the Italian regions is evident before and after the break. By contrast, the outcome relative to the unknown break date model greatly depends on the econometric model used to estimate β-convergence.
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