The few panel data tests for predictability of returns that exist are based on the prerequisite that both the number of time series observations, T, and the number of crosssection units, N, are large. As a result, these tests are impossible for stock markets where lengthy time series data are...

In a recent paper Pedroni and Yao (2006) present strong evidence suggesting that Chinese regional output is diverging, a result that flies in the face of the current opinion of Chinese policymakers. This paper provides an in-depth analysis of the reasoning behind this finding. Our main result is...