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Identifying Aggregate Demand and Aggregate Supply Components of Inflation Rate: A Structural Vector Autoregression Analysis for Japan

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  • Mio, Hitoshi

    (Bank of Japan)

Abstract

I estimate a bivariate output-price structural vector autoregression (VAR) model for Japan to decompose inflation rate time-series into two components explained by aggregate demand (AD) and aggregate supply (AS) shocks. For the model's identifying restriction, I assume that the long- run elasticity of output with respect to permanent changes in price due to AD shocks is zero; i.e., an AD shock has no long-run impact on the level of output. Dynamic properties of the estimated model are shown to be generally consistent with the predictions of the conventional AS-AD framework. The main features of the historical decomposition are the following: (1) the inflation rate explained by the AD shock shows a procyclical swing since 1970; (2) the inflation rate explained by the AS shock temporarily spikes during the two oil crises and experiences a large countercyclical swing in the 1990s; and (3) the coincidence of large and negative AS and AD shocks explains the combination of price stability and output stagnation during two recessions in the 1990s. These results are qualitatively robust to the sectoral shocks, alternative choices for the price variable, and assumptions for the lag length of VAR and the long-run elasticity of output with respect to permanent changes in price due to AD shocks. However, the bivariate approach does not allow the identification of more than three types of shocks with different dynaic effects on output and price. It might be necessary to expand the model to deal with this limitation.

Suggested Citation

  • Mio, Hitoshi, 2002. "Identifying Aggregate Demand and Aggregate Supply Components of Inflation Rate: A Structural Vector Autoregression Analysis for Japan," Monetary and Economic Studies, Institute for Monetary and Economic Studies, Bank of Japan, vol. 20(1), pages 33-56, January.
    • Handle: RePEc:ime:imemes:v:20:y:2002:i:1:p:33-56
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    3. Claudio Morana, 2005. "The Japanese deflation: has it had real effects? Could it have been avoided?," Applied Economics, Taylor & Francis Journals, vol. 37(12), pages 1337-1352.
    4. Carlos A. Rodríguez, 2018. "Fuentes de las fluctuaciones macroeconómicas en Puerto Rico\Sources of macroeconomic fluctuations in Puerto Rico," Estudios Económicos, El Colegio de México, Centro de Estudios Económicos, vol. 33(2), pages 219-252.
    5. Ogawa, Eiji & Iwatsubo, Kentaro, 2009. "External adjustments and coordinated exchange rate policy in Asia," Journal of Asian Economics, Elsevier, vol. 20(3), pages 225-239, May.
    6. Ashima Goyal & Sanchit Arora, 2012. "Deriving India's Potential growth from theory and structure," Indira Gandhi Institute of Development Research, Mumbai Working Papers 2012-018, Indira Gandhi Institute of Development Research, Mumbai, India.

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    JEL classification:

    • E31 - Macroeconomics and Monetary Economics - - Prices, Business Fluctuations, and Cycles - - - Price Level; Inflation; Deflation

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