US economic growth in the gilded age

In the immediate postwar period, Moses Abramovitz and Robert Solow both examined data on output and input growth from the first half of the 20th century and reached similar conclusions. In the 20th century, in contrast with the nineteenth, a much smaller fraction of real output growth could be swept back to the growth of inputs conventionally measured. The rise of the residual, they suggested, was an important distinguishing feature of 20th century growth. This paper identifies two difficulties with this claim. First, TFP growth virtually disappeared in the US between 1973 and 1995. Second, TFP growth was in fact quite robust between the end of the Civil War and 1906, as was in fact acknowledged by Abramovitz in his 1993 Economic History Association Presidential address. Developing a revised macroeconomic narrative is essential in reconciling our interpretation of these numbers with what we know about scientific, technological, and organizational change during the gilded age.