Sichel, Daniel; Corrado, Carol A.; Hulten, Charles R. - National Bureau of Economic Research (NBER) - 2006
2003), and that this leads to the exclusion of more than $3 trillion of business intangible capital stock. To assess the … importance of this omission, we add capital to the standard sources-of-growth framework used by the BLS, and find that the … rate of change of output per worker increases more rapidly when intangibles are counted as capital, and capital deepening …