In this study we test whether social capability promotes catching up, the hypothesis that there is technological spillover from leaders to followers. A simple model that captures the hypothesized interaction is presented and tested on an extended sample of countries. The stock of human capital...

Abstract <p> This paper introduces age-based population heterogeneity in the Mankiw, Romer, and Weil (1992)model to improve measurement of aggregate labor and aggregate human capital. The estimation results are consistent with this model, and they indicate a hump-shaped and quantitatively important...</p>