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Macro stress tests and crises: what can we learn?

Author

Listed:
  • Rodrigo Alfaro
  • Mathias Drehmann

Abstract

Few, if any, of the macro stress tests undertaken before the current crisis uncovered significant vulnerabilities. This article examines the reasons for the poor performance by comparing the outcomes of simple stress tests with actual events for a large sample of historical banking crises. The results highlight that the structural assumptions underlying stress testing models do not match output growth around many crises. Furthermore, unless macro conditions are already weak prior to the eruption of the crisis, the vast majority of stress scenarios based on historical data are not severe enough. Last, stress testing models are not robust, as statistical relationships tend to break down during crises. These insights have important implications for the design and conduct of stress tests in the future.

Suggested Citation

  • Rodrigo Alfaro & Mathias Drehmann, 2009. "Macro stress tests and crises: what can we learn?," BIS Quarterly Review, Bank for International Settlements, December.
    • Handle: RePEc:bis:bisqtr:0912e
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    References listed on IDEAS

    as
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    3. Claudio Borio & Mathias Drehmann, 2011. "Toward an Operational Framework for Financial Stability: “Fuzzy” Measurement and Its Consequences," Central Banking, Analysis, and Economic Policies Book Series, in: Rodrigo Alfaro (ed.),Financial Stability, Monetary Policy, and Central Banking, edition 1, volume 15, chapter 4, pages 063-123, Central Bank of Chile.
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    More about this item

    JEL classification:

    • E44 - Macroeconomics and Monetary Economics - - Money and Interest Rates - - - Financial Markets and the Macroeconomy
    • G01 - Financial Economics - - General - - - Financial Crises
    • G17 - Financial Economics - - General Financial Markets - - - Financial Forecasting and Simulation

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