Human capital composition, R&D and the increasing role of services

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We relate the negative correlation between income and the ratio of high to low-tech human capital and the positive correlation between income and investment on R&D, both present in developed countries, to the transition to a services economy. To this end a growth model with endogenous innovation and accumulation of high-tech and low-tech human capital is developed. We consider a negative effect of technological development on the accumulation of high-tech human capital and that services are relatively intensive in low-tech human capital. We confirm the model implications quantitatively in a calibration exercise.

Original languageEnglish
Article number12
JournalTopics in Macroeconomics
Issue number1
Publication statusPublished - 25 Oct 2006


  • High-tech human capital
  • Human capital composition
  • R&D
  • Services


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