In this paper we examine temporal properties of eleven natural resource real price series from 1870-1990. Recent studies by Ahrens and Sharma [1997], Berck and Roberts [1996], and Slade [1988], among others, find that many nonrenewable resource prices have a stochastic trend. We revisit this...

This paper empirically tests if U.S. regional per capita incomes are stochastically converging. We advance the issue by employing a LM panel unit root test that allows for region-specific structural breaks in compensating differentials. Both the number and location of the breaks are endogenously...

In this paper, we propose new tests for threshold cointegration in the autoregressive distributed lag (ADL) model. The indicators in the threshold model are based on either a nonstationary or stationary threshold variable. The cointegrating vector in this paper is not pre-specied. We adopt a...