During the four years 1995-99 U. S. productivity growth experienced a strong revival and achieved growth rates exceeding that of the golden age' of 1913-72. Accordingly many observers have declared the New Economy' (the Internet and the accompanying acceleration of technical change in computers...

After fifty years of catching up to the United States level of productivity, since 1995 Europe has been falling behind. The growth rate in output per hour over 1995-2003 in Europe was just half that in the United States, and this annual growth shortfall caused the level of European productivity...

(1) Whatever happened to the cyclical effect? Skeptics were justified on the basis of data through the end of 1999 in their claim that part of the post-1995 productivity growth revival reflected the normal cyclical correlation between productivity and output growth. In contrast data through...