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Time changing effects of external shocks on macroeconomic fluctuations in Peru: empirical application using regime-switching VAR models with stochastic volatility

Paulo Chávez (paulo.chavez@pucp.edu.pe) and Gabriel Rodríguez
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Paulo Chávez: Pontificia Universidad Católica del Perú

Review of World Economics (Weltwirtschaftliches Archiv), 2023, vol. 159, issue 2, No 8, 505-544

Abstract: Abstract This article quantifies and analyzes the evolving impact of external shocks on Peru’s macroeconomic fluctuations in 1994Q1–2019Q4. For this purpose, we use a group of models with regime-switching time-varying parameters and stochastic volatility (RS-VAR-SV), as proposed by Chan and Eisenstat (J Appl Econ 33(4):509–532, 2018. https://doi.org/10.1002/jae.2617 ). The data suggest a model with contemporaneous coefficients and constant lags and intercepts, but with regime-switching variances; and point to the existence of two regimes. The IRFs, FEVDs, and HDs show that: (i) China growth shocks have a higher impact on Peru’s output growth (around 0.8%); (ii) financial shocks contract domestic output growth by 0.3% and domestic monetary policy is synchronized with Fed rate movements; (iii) external shocks explain 35% and 70% of output fluctuations under regimes 1 and 2, respectively; and (iv) China growth shocks contributed 1.0 p.p. to the 1.1-p.p. increase (around 89%) in Peru’s output growth between regimes 1 and 2. Additionally, we validate these results by performing seven robustness exercises consisting in changing priors, reordering variables, changing variables, and using four different specifications for the baseline model.

Keywords: External shocks; Macroeconomic fluctuations; Regime-switching autoregressive vectors; Stochastic volatility; Model comparison; Peruvian economy (search for similar items in EconPapers)
JEL-codes: C11 C32 C52 E32 F41 (search for similar items in EconPapers)
Date: 2023
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Citations: View citations in EconPapers (6)

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DOI: 10.1007/s10290-022-00474-1

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