Comovement: it's not a puzzle

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  • 1 January 2008
    • preprint
      • Published in RePEc
Abstract
A defining feature of business cycles is the comovement of inputs at the sectoral level with aggregate activity. Standard models cannot account for this phenomenon. This paper develops and estimates a two-sector dynamic general equilibrium model that can account for this key regularity. My model incorporates three shocks to the economy: monetary policy shocks, neutral technology shocks, and embodied technology shocks in the capital-producing sector. The estimated model is able to account for the response of the US economy to all three shocks. Using this model, I argue that the key friction underlying sectoral comovement is rigidity in nominal wages.

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