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Lilia Karnizova
 
''Letting the speculative and the news views of the Japanese business cycle compete''
( 2013, Vol. 33 No.2 )
 
 
This note uses a dynamic stochastic general equilibrium model with direct preferences for financial wealth to explore how stock price booms and busts relate to the real side of the economy. It evaluates the 'speculative' (sunspots) and 'news' (anticipated future changes in productivity) explanations of the Japanese stock market bubble and economic business cycle in 1986-1999. Depending on parameter configurations, the model yields either a unique equilibrium or multiple equilibria. The note calibrates two versions of the model: (i) a version with multiple equilibria, driven solely by sunspot shocks, and (ii) a version with a unique equilibrium, driven by surprise and news shocks to productivity. In both cases, expectations shocks are estimated to perfectly match the historical path of the Nikkei stock market average. Simulation results show that, from the perspective of the model, both the speculative and the news views can explain equally well empirical investment. The two views, however, differ in their predictions for consumption, output and real wages. These differences could be explored in further work on disentangling empirical importance of sunspot and news shocks.
 
 
Keywords: sunspots, news shocks, Japanese economy, business cycles, stock market, expectations, speculations, bubbles, investment
JEL: E3 - Prices, Business Fluctuations, and Cycles: General (includes Measurement and Data)
E4 - Money and Interest Rates: General
 
Manuscript Received : Aug 27 2012 Manuscript Accepted : May 12 2013

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