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The Real Effects of Uncertainty Shocks: New Evidence from Linear and Nonlinear SVAR Models

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  • Josué Diwambuena

    (Free University of Bozen-Bolzano, Italy)

  • Jean-Paul K. Tsasa

    (Department of Economics, Université du Québec, Montreal)

Abstract

This paper applies both linear and nonlinear structural vector autoregressive (SVAR) models using two distinct identifications methods to disentangle the macroeconomic effects of uncertainty shocks for a developing country. As an application, we use macroeconomic data for the Democratic Republic of Congo (Congo), one of the largest and least developed countries in the world with a rich history of domestic political instability and high macroeconomic volatility. Our measure of uncertainty is the world uncertainty index for the Congo recently developed by Ahir et al. (2018) for a panel of developed and developing countries. Using a standard SVAR model with sign restrictions, we provide evidence that an unexpected increase in uncertainty triggers contractions in GDP and investment on impact in the Congo. We show that uncertainty shocks are among the greatest drivers of economic fluctuations. Our results are robust across alternative linear and nonlinear SVAR specifications using the Cholesky decomposition.

Suggested Citation

  • Josué Diwambuena & Jean-Paul K. Tsasa, 2021. "The Real Effects of Uncertainty Shocks: New Evidence from Linear and Nonlinear SVAR Models," BEMPS - Bozen Economics & Management Paper Series BEMPS87, Faculty of Economics and Management at the Free University of Bozen.
  • Handle: RePEc:bzn:wpaper:bemps87
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    More about this item

    Keywords

    Uncertainty; SVAR; Sign restriction; Congo.;
    All these keywords.

    JEL classification:

    • C30 - Mathematical and Quantitative Methods - - Multiple or Simultaneous Equation Models; Multiple Variables - - - General
    • D80 - Microeconomics - - Information, Knowledge, and Uncertainty - - - General
    • E32 - Macroeconomics and Monetary Economics - - Prices, Business Fluctuations, and Cycles - - - Business Fluctuations; Cycles
    • O40 - Economic Development, Innovation, Technological Change, and Growth - - Economic Growth and Aggregate Productivity - - - General

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