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Persistent heterogeneity of R&D intensities within sectors: Evidence and policy implications

机译:部门内部研发强度的持续异质性:证据和政策含义

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摘要

Do firms in the same sector converge towards the same R&D intensities? Previous research has often assumed this to be true. A closer examination, using microdata from the EU Industrial R&D Investment Scoreboard for the years 2000–2015, shows considerable heterogeneity in R&D intensities among firms in the same sector, and that this heterogeneity persists over time. Statistical tests of convergence show that the variation in R&D intensities does not decrease over time (i.e. no σ-convergence), although firms with an R&D intensity below the industry average do seem to catch up with the leaders (i.e. evidence of β-convergence). Overall, firms in the same industry do not converge to a common R&D intensity. Policy implications are discussed.
机译:同一行业的公司是否趋向于相同的研发强度?先前的研究通常认为这是正确的。使用来自欧盟工业研发投资记分板的2000-2015年的微观数据进行的仔细研究表明,同一行业的公司之间研发强度存在相当大的异质性,并且这种异质性会随着时间的流逝而持续。收敛性的统计检验表明,尽管研发强度低于行业平均水平的公司似乎确实赶超了领导者(即β收敛的证据),但R&D强度的变化不会随时间减小(即没有σ收敛)。 。总体而言,同一行业的公司不会收敛到共同的研发强度。讨论了政策含义。

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