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Central bank's surprise policy and its potential to change people's deflationary mindset: evidence from the yen-dollar exchange market

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  • Koichiro Kamada

    (Faculty of Business and Commerce, Keio University)

Abstract

This paper reviews the Bank of Japan’s (BOJ) monetary policy from the perspective of surprise observed in the foreign exchange market and investigates the potential of central bank’s surprising announcement as a policy tool to change people’s deflationary mindset. We propose a surprise measure that is based on the daily candlestick-chart data on the yen-dollar exchange rate and identify surprise that occurred in the Tokyo and New York markets. Using the identified surprise, we evaluate monetary policies of BOJ governors and compare them with those of Fed chairs. We present statistical evidence that shows that under the command of Governor Haruhiko Kuroda, the BOJ was strongly dependent on surprise policy in the course of the quantitative and qualitative monetary easing. We also show that the surprise generated during the Kuroda term succeeded in raising the trend inflation rate, but failed to steepen the slope of the Phillips curve and to enhance the pass-through of the foreign exchange rate.

Suggested Citation

  • Koichiro Kamada, 2025. "Central bank's surprise policy and its potential to change people's deflationary mindset: evidence from the yen-dollar exchange market," Keio-IES Discussion Paper Series DP2025-015, Institute for Economics Studies, Keio University.
    • Handle: RePEc:keo:dpaper:dp2025-015
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    References listed on IDEAS

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    1. Christiano, Lawrence J & Eichenbaum, Martin & Evans, Charles, 1996. "The Effects of Monetary Policy Shocks: Evidence from the Flow of Funds," The Review of Economics and Statistics, MIT Press, vol. 78(1), pages 16-34, February.
    2. Fama, Eugene F, 1970. "Efficient Capital Markets: A Review of Theory and Empirical Work," Journal of Finance, American Finance Association, vol. 25(2), pages 383-417, May.
    3. Magnus Andersson, 2010. "Using Intraday Data to Gauge Financial Market Responses to Federal Reserve and ECB Monetary Policy Decisions," International Journal of Central Banking, International Journal of Central Banking, vol. 6(2), pages 117-146, June.
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    Keywords

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    JEL classification:

    • C54 - Mathematical and Quantitative Methods - - Econometric Modeling - - - Quantitative Policy Modeling
    • C58 - Mathematical and Quantitative Methods - - Econometric Modeling - - - Financial Econometrics
    • E52 - Macroeconomics and Monetary Economics - - Monetary Policy, Central Banking, and the Supply of Money and Credit - - - Monetary Policy
    • E58 - Macroeconomics and Monetary Economics - - Monetary Policy, Central Banking, and the Supply of Money and Credit - - - Central Banks and Their Policies
    • G15 - Financial Economics - - General Financial Markets - - - International Financial Markets

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