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Unconventional Monetary Policy and a Financial Intermediary: Were they Relevant to Fluctuations in the Japanese Economy?

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  • Siyu Zhang

    (Graduate School of Economics, Meiji Gakuin University, 1-2-37 Shirokanedai, Minato-ku, Tokyo 108-8636, Japan)

Abstract

In this paper, we study whether the implementation of unconventional monetary policy (UMP) in Japan is relevant to its economy fluctuations. We conducted a Bayesian estimation of a DSGE model with an endogenous financial intermediary, and the central bank in the model is allowed to conduct a credit policy. Our findings can be summarized in the following three points: first, we find that the estimated posterior distribution of model parameters and the impulse response provide a plausible interpretation of the data. Second, by shock decomposition, we find that the credit supply shock of the bank sector played a crucial role in the GDP and investment fluctuations in the sample period. Third, the estimated risk spread reveals a high degree of correlation to the actual credit spread in Japan. Our estimation results suggest that UMP in Japan is effective in the sense of narrowing credit spreads, which leads to subsequent increase in investment and, in turn, positively affects the economy.

Suggested Citation

  • Siyu Zhang, 2020. "Unconventional Monetary Policy and a Financial Intermediary: Were they Relevant to Fluctuations in the Japanese Economy?," Journal of International Commerce, Economics and Policy (JICEP), World Scientific Publishing Co. Pte. Ltd., vol. 11(03), pages 1-17, October.
    • Handle: RePEc:wsi:jicepx:v:11:y:2020:i:03:n:s1793993320500118
    DOI: 10.1142/S1793993320500118
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