Comparing talent across time is difficult as productivity changes. To compare talent across time we utilize Major League baseball data from 1871-2010 and time series techniques to determine if the mean and standard deviation of five performance measures are stationary and if structural breaks...

Annual global CO2 emission forecasts at 2100 span 10 to 40 billion tonnes. Modeling work over the past decade has not narrowed this range nor provided much guidance about probabilities. We examine the time-series properties of historical per capita CO2 emissions and conclude that per capita...

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...

The spatial and temporal distributions of income and pollution have important implications in both a positive and normative sense. Recent empirical work suggests that (i) incomes have spatially converged through time, and (ii) income and pollution levels are linked. This paper weds these two...

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...

This paper uses newly available long-span data on real per capita incomes from 1900-2001 to test for stochastic convergence in a diverse group of 29 countries. To perform our tests, we utilize the two-break LM unit root test of Lee and Strazicich (2003) and endogenously determine two distinct...

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...

We utilize time series tests to investigate if Barry Bonds’ batting has a deterministic or stochastic trend and to test if structural breaks occur. Bonds’ monthly on base percentage plus slugging percentage (OPS) is examined from 1986 to 2007. We find that Bonds’ OPS is stationary around...