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Changes in Business Cycles: Evidence and Explanations

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  • Christina D. Romer

Abstract

This paper analyzes changes in American business cycles over the twentieth century and suggests a possible explanation for the major changes that have and have not occurred. The empirical analysis shows that the volatility of annual real macroeconomic indicators and the average severity of recessions have declined only slightly between the pre-World War I and post-World War II eras. Recessions have, however, become somewhat less frequent and more uniform. The paper goes on to suggest that the advent of macroeconomic policy after World War II can account for both the continuity and the changes in business cycles. Countercyclical monetary policy and automatic stabilizers have prolonged postwar expansions and prevented severe depressions. At the same time, policy-induced booms and recessions have led to the continued volatility of the postwar economy.

Suggested Citation

  • Christina D. Romer, 1999. "Changes in Business Cycles: Evidence and Explanations," NBER Working Papers 6948, National Bureau of Economic Research, Inc.
  • Handle: RePEc:nbr:nberwo:6948
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    1. Christina D. Romer & David H. Romer, 1994. "What Ends Recessions?," NBER Chapters,in: NBER Macroeconomics Annual 1994, Volume 9, pages 13-80 National Bureau of Economic Research, Inc.
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    JEL classification:

    • E32 - Macroeconomics and Monetary Economics - - Prices, Business Fluctuations, and Cycles - - - Business Fluctuations; Cycles
    • E63 - Macroeconomics and Monetary Economics - - Macroeconomic Policy, Macroeconomic Aspects of Public Finance, and General Outlook - - - Comparative or Joint Analysis of Fiscal and Monetary Policy; Stabilization; Treasury Policy

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