Saving Behavior in Low- and Middle-Income Developing Countries: A Comparison

The relationship between real interest rates, saving, and growth is a central issue in development economics. Using macroeconomic data for a cross-section of countries, we estimate a model in which the intertemporal elasticity of substitution varies with the level of wealth. The estimated parameters are used to calculate, in the context of a simple endogenous growth model, the responsiveness of saving to real interest rate changes for countries at differing stages of development. The hypothesis that the saving rate, and its sensitivity to the interest rate, are a rising function of income finds strong empirical support.