We analyze the e¤ects of capital mobility on the speed of convergence and welfare. Using a two-sector endogenous growth model, the speed of convergence is determined primarily by the gap in rates of return between physical and human capital. In a closed economy, where we consider a typi- cal situation of having relatively less physical capital than in a steady state, the return on physical capital will be signi cantly large, while the return on human capital will be relatively small. Thus, this gap in rates of return is considerably large when the economy is not at its steady state. In an open economy, where human capital is non tradable, the gap in rates of return is small, as it is the gap between the international interest rate ...