Deflation and the International Great Depression: A Productivity Puzzle
Harold L. Cole
University of Pennsylvania - Department of Economics; National Bureau of Economic Research (NBER)
Lee E. Ohanian
University of California, Los Angeles (UCLA) - Department of Economics; National Bureau of Economic Research (NBER)
Universite de Montreal
February 1, 2005
This paper presents a dynamic, stochastic general equilibrium study of the causes of the international Great Depression. We use a fully articulated model to assess the relative contributions of deflation/monetary shocks, which are the most commonly cited shocks for the Depression, and productivity shocks. We find that productivity is the dominant shock, accounting for about 2/3 of the Depression, with the monetary shock accounting for about 1/3. The main reason deflation doesn't account for more of the Depression is because there is no systematic relationship between deflation and output during this period. Our finding that a persistent productivity shock is the key factor stands in contrast to the conventional view that a continuing sequence of unexpected deflation shocks was the major cause of the Depression. We also explore what factors might be causing the productivity shocks. We find some evidence that they are largely related to industrial activity, rather than agricultural activity, and that they are correlated with real exchange rates and non-deflationary shocks to the financial sector.
Keywords: Great Depression, Deflation, Productivity Shocks, Monetary Shocks
JEL Classification: E3, F4
Date posted: July 24, 2008
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