Medium-term Fluctuations and the 'Great Ratios' of Economic Growth

Christian Groth, Jakob Brøchner Madsen

Abstract

Evidence for the OECD countries show that the “great ratios”, such as the unemployment rate, factor shares, Tobin’s q and the investment-capital ratio, fluctuate significantly on medium-term frequencies of 10-40 years duration. To explain these medium-term fluctuations, we establish a macro-dynamic model where the q-theory of investment is combined with sluggish real-wage adjustment in the labour market. In this framework, responses to shocks show persistence and amplification. A high degree of real-wage rigidity combined with a low elasticity of factor substitution leads to damped internal oscillations and hump-shaped impulse-response functions
Original languageEnglish
Place of PublicationKbh.
PublisherØkonomisk institut, Københavns Universitet
Number of pages47
Publication statusPublished - 2013
SeriesUniversity of Copenhagen. Institute of Economics. Discussion Papers (Online)
Number16
Volume2013
ISSN1601-2461

Keywords

  • Faculty of Social Sciences
  • Medium-term cycles
  • Tobin’s q
  • real-wage Phillips curve
  • elasticity of factor substitution
  • endogenous oscillations

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