Relationship Between Output Volatility and Output in OECD Countries Revisited

Abstract

This study revisits the empirical relationship between output volatility and output for twelve OECD countries. An extended AR-EGARCH-M model was used to identify the structural break, asymmetric effect, jump effect and spillover effect. In addition to the classical logarithmic definition of growth, the study uses the Hodrick-Prescott filter to compute the deviations from the long-term trend as the output gap. The empirical results show that (i) the effect of output volatility on output differs across countries under the same model specifications; and (ii) while the in-mean effect and spillover effect are stronger for the output gap-based models, the jump effect has a major effect on output volatility under the classical logarithmic definition.