| Sumario: | In this paper a model is presented and estimated that explains real long-term interest rates in terms of developments in low-frequency and high-frequency economic factors in a multi-country framework, using a data set covering 17 OECD countries since the early-1980s. A simultaneous estimation procedure is adopted (using instrumental variables), with an error correction framework for each country separating the low-frequency fundamental influences on real rates from the higher-frequency short-term dynamics. Parameters of the low-frequency variables are constrained to be equal across countries, which imposes the requirement that they have consistent effects both on behaviour through time and in explaining cross-country interest differentials. The results indicate that the low-frequency component of real rates is determined by fundamentals such as the rate of return on business capital, portfolio risk, inflation uncertainty, and indicators of future saving and investment ...
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