We construct quarterly aggregate gross and net capital stock series for the post-war U.S. economy using annual capital stock, capital depreciation, and capital discard figures along with quarterly investment series. We construct nominal and real measures of all three categories in the aggregate...

In this paper we argue that pricing is all about price changes, and that the costs of price changes are often simultaneously subtle and substantial. We discuss a framework to deal with the dynamics of changing prices. This framework incorporates customer interpretations of price changes, an...

Existence of a cointegration relationship between two time series in the time domain imposes restrictions on the series zero-frequency behaviour in terms of their squared coherence, phase, and gain, in the frequency domain. I derive these restrictions by studying cross-spectral properties of a...

Economists measure the economy-wide cost of protection in terms of static efficiency, growth rates and firm- or industry-level productivity. The earlier literature was devoted almost exclusively to the measurement of static welfare effects. But the recent proliferation of cross-country...

Critics have muddled the public debate over offshore outsourcing by using the term interchangeably to refer to altogether different phenomena such as on-line purchase of services, direct foreign investment and, sometimes, all imports. We argue that clarity requires distinguishing among these...