In a classic article, Granger (1966) asserted that most economic time series measured in level have spectra that exhibit a smooth declining shape with considerable power at very low frequencies. There has been no systematic attempt to examine Granger's assertion. We estimate output level spectra...

The academic debate over the deterrent effect of capital punishment has intensified again with a major policy outcome at stake. About two dozen empirical studies have recently emerged that explore the issue. Donohue and Wolfers (2005) claim to have examined the recent studies and shown the...

Does capital punishment deter capital crimes? We use panel data covering the fifty states duringthe period 1960-2000 period to examine the issue. Our study is novel in four ways. First, we estimate the moratorium's full effect by using both pre- and postmoratorium evidence. Second, we exploit...

Evidence on the deterrent effect of capital punishment is important for many states that are currently considering a change in their position on the issue. We examine the deterrent hypothesis using county-level post-moratorium panel data and a system of simultaneous equations. The procedure we...

We estimate output growth rate spectra for 58 countries. The spectra exhibit diverse shapes. To study the sources of this diversity, we estimate the short-run, business cycle, and long-run frequency components of the sampled series. For most OECD countries the bulk of the spectral mass is in the...

Although linearly interpolated series are often used in economics, little has been done to examine the effects of interpolation on time series properties and on statistical inference. We show that linear interpolation of a trend tationary series superimposes a ‘periodic’ structure on the...

In a classical article, Granger (1966) argued that the levels of most economic time series have spectra that exhibit a smooth declining shape with considerable power at very low frequencies. He termed it "the typical spectral shape of an economic variable." Granger's assertion has not been...