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 wrongful death and personal injury litigation, the amount of compensation depends on the difference between the interest rate that the plaintiff is expected to earn by investing the award and the rate of wage growth that the plaintiff would have been expected to receive in the pre-injury...

In this paper, we propose a minimum LM unit root test that endogenously determines a structural break in intercept and trend. Critical values are provided, and size and power properties are compared to the endogenous one-break unit root test of Zivot and Andrews (1992). Nunes, Newbold, and Kuan...