Mankiw, Romer and Weil (1992) have extended the Solow (1956) model by augmenting the production function with human capital. Its empirical success is impressive and it showed a procedure to improve the explanatory power of the neoclassical growth model. This paper suggests an empirical procedure...

This paper provides a simple proof of the result that if a production function is homogeneous, displays non-increasing returns to scale, is increasing and quasiconcave, then it is concave. If the function is strictly quasiconcave or one-to-one, homogeneous, displays decreasing returns to scale...

The neoclassical growth model was extended by Mankiw, Romer and Weil (1992) to estimate the level effects of additional factors like human capital. We suggest a further extension to capture their permanent growth effects. Time series data from Fiji are used to show that the growth effect of...