Journal Article
Defining capital in growth models
Gort, Michael; Jafarey, Saqib; Rupert, Peter (1999-04)
This article analyzes the measurement of the capital stock when technological advance is embodied in capital. The source of the problem is that capital is not homogeneous across vintages. Which measure of the capital stock to use is dictated by the question being addressed.
Economic Review , Issue Q II , Pages 19-23

Working Paper
Measuring the rate of technological progress in structures
Greenwood, Jeremy; Gort, Michael; Rupert, Peter (1998)
An effort to measure technological progress in structures by using panel data on the age and rents of buildings in a vintage capital model, where buildings are replaced at some chosen periodicity. It finds that there has been significant technological advance in structures, which accounts for a major part of economic growth.
Working Papers (Old Series) , Paper 9806

Journal Article
Accounting for capital consumption and technological progress
Rupert, Peter; Gort, Michael (1999-04)
Methods currently used to calculate capital consumption, the stock of capital, and the sources of economic growth do not adequately measure the underlying growth in inputs due to technological advance. This lack affects tax policy as well as the design of programs targeting potential areas of economic growth. The authors present a model designed to surmount the problems affecting current methods of calculation.
Economic Review , Issue Q II , Pages 13-18

Journal Article
How much of economic growth is fueled by investment-specific technological progress?
Greenwood, Jeremy; Gort, Michael; Rupert, Peter (1999-03)
Discovering how economies grow is vitally important for economists and policymakers alike. This Commentary shows that more than half of U.S. economic growth can be attributed to technological advance in equipment and structures.
Economic Commentary , Issue Mar