Recent tests of the Convergence Hypothesis, or the tendency for per capita income levels to narrow over time, have included a time-series testing approach (see Bernard & Durlauf, 1995, 1996; Oxley & Greasley, 1995, Greasley & Oxley, 1997, 1998a). Results have been mixed, with Bernard & Durlauf...

This paper considers unit root tests of the index of British industrial production 1700-1913. For the full sample the data are found to be I(1). However, three distinct phases are identified with alternating stationarity properties. One period, 1780-1851, is identified as the British Industrial...