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US, UK, France, and Germany responded to structural shocks to the VIX. Nonlinear Granger causality tests confirm these …
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We study the time-varying effects of Tobin's q and cash flow on investment dynamics in the USA using a vector autoregression model with drifting parameters and stochastic volatilities estimated via Bayesian methods. We find significant variation over time of the response of investment to shocks...
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In this paper we propose Granger (non-)causality tests based on a VAR model allowing for time-varying coefficients. The … transition variable. The model allows for testing Granger non-causality when the VAR is subject to a smooth break in the … coefficients of the Granger causal variables. The proposed test then is applied to the money-output relationship using quarterly US …
Persistent link: https://www.econbiz.de/10003644229
Models based on economic theory have serious problems at forecasting exchange rates better than simple univariate driftless random walk models, especially at short horizons. Multivariate time series models suffer from the same problem. In this paper, we propose to forecast exchange rates with a...
Persistent link: https://www.econbiz.de/10003765975