haku: @author Klepper, S. / yhteensä: 14
viite: 12 / 14
| Tekijä: | Cohen, W. M. Klepper, S. |
| Otsikko: | The anatomy of industry R and D intensity distributions |
| Lehti: | American Economic Review
1992 : SEP, VOL. 82:4, p.773-799 |
| Asiasana: | R&D R&D EVALUATION COMPANIES BY SIZE MARKET STRUCTURE RETURN ON INVESTMENT |
| Kieli: | eng |
| Tiivistelmä: | A set of regularities in the distribution of company R and D intensities are established within the manufacturing industries, using firm data disaggregated by industry. It is shown how a simple probabilistic process , in which chance influences a key unobserved determinant of R and D and firm size conditions the returns to R and D, can account for these regularities and other features of the distributions. The model provides a unified, noncausal explanation of a series of long-observed relationships across mean R and D intensity, market concentration, and the coefficient of variation. A novel explanation for the inverse relationship of R and D productivity and firm size is given. |
SCIMA