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Title: Noisy News in Business cycles

Author(s): Mario Forni, Luca Gambetti, Marco Lippi and Luca Sala

Publication Date: August 2013

Keyword(s): Business cycle, Imperfect information, News, Noise, Nonfundamentalness and SVAR

Programme Area(s): International Macroeconomics

Abstract: In a situation where agents can only observe a noisy signal of the shock to future economic fundamentals, SVAR models can still be successfully employed to estimate the shock and the associated impulse response functions. Identification is reached by means of dynamic rotations of the reduced form residuals. We use our identification approach to investigate the role of the "noise" shock the component of the signal observed by agents which is unrelated to economic fundamentals as a source of business cycle fluctuations. We find that noise shocks generate hump-shaped responses of GDP, consumption and investment and account for about a third of their prediction error variance at business cycle horizons.

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Bibliographic Reference

Forni, M, Gambetti, L, Lippi, M and Sala, L. 2013. 'Noisy News in Business cycles'. London, Centre for Economic Policy Research. https://cepr.org/active/publications/discussion_papers/dp.php?dpno=9601