Based on a general growth model, this paper finds that the steady-state direction of technological progress is determined by the scale return of the production function and the relative factor supply elasticities. A specific version of that model extends Acemoglu (2002) to provide the underlying...

The paper presents a human capital based theory of the sectoral transformation along the balanced growth path equilibrium. Allowing a small upward trend in the productivity of the human capital sector, combined with differential human capital intensity and constant productivity across sectors,...

What determines the direction of technological progress is one of the central questions that economics needs to answer. By introducing a small but fundamental generalization of Acemolgu (2002) the current paper points out the key determinants of that direction. The extended model argues that...

This note proves that unless the amount of scientists S= s_K/η_L, the proposition 15.12 in Acemoglu (2009) does not hold. Because this is an extremely restrictive requirement, it is not suitable as a proof of why the technological progress must be labor-augmenting on the BGP

We present a tractable model for analyzing the relationship between economic growth and the intensive and extensive margins of technology adoption. The “extensive" margin refers to the timing of a country's adoption of a new technology; the “intensive" margin refers to how many units are...

We prove a generalized, multi-factor version of the Uzawa steady-state growth theorem. The theorem implies that neoclassical growth models need at least three factors of production to be consistent with empirical evidence on both the capital-labor elasticity of substitution and the existence of...

In the aftermath of World War II, the world's economies exhibited very different rates of economic recovery. We provide evidence that those countries that caught up the most with the U.S. in the postwar period are those that also saw an acceleration in the speed of adoption of new technologies....

We construct a 3-factor, directed technical change growth model that ex-hibits capital-augmenting technical change on the balanced growth path (BGP), circumventing the issues usually caused by the 2-factor Uzawa growth theorem. We calibrate the model to the United States and consider a...

We prove a generalized, multi-factor version of the Uzawa steady-state growth theorem, Balanced growth with capital-augmenting technical change is possible when capital has a unitary elasticity of substitution with at least one other factor of production, Thus, a neoclassical growth model with...

In a neoclassical economy with endogenous capital- and labor-augmenting technical change the steady-state growth rate of output per worker is shown to increase in the elasticity of substitution between capital and labor. This confirms the assessment of Klump and de La Grandville (2000) that the...