Tests of the Convergence Hypothesis, or the tendency for per capita income levels to narrow over time, have generally utilized cross-sectional data from a wide range of disparate coun7 tries and resulted in conflicting evidence. Using modern time series tests we find evidence of a Nordic...

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...