Recent evidence show that factor shares, if properly measured, are far from constant.Moreover, the shares of natural resources and raw labor seem to be negativelycorrelated with income per capita while the share of human and physical capital ispositively correlated with income per capita. Now,...

The relative stability of aggregate labor's share constitutes one of the great macroeconomic ratios. However, changes in individual industry labor's shares are essentially statistically independent of one another, and the average values of industry labor's shares vary widely. We present a...

This note presents a simple extension of the seminal Romer (1990, Journal of Political Economy 98(2), 71â102) paper. Allowing for elasticity of substitution between labor and capital to be different from one (CES production function instead of CobbâDouglas), the following results are obtained....

We present an endogenous growth model where innovations are factor saving. Technologies can be changed paying a cost and technological change takes place only if the benefits are larger than the costs. Since the gains derived from factor saving innovations depend on factor abundance, biased...

The common assumptions that labor income share does not change over time or across countries and that factor income shares are equal to the elasticity of output with respect to factors have had important implications for economic theory. However, there are several theoretical reasons for why the...

In this study, we propose an explanation for why labor and capital shares do not seem to have a trend: an increasing trend in physical capital share is compensated by a decreasing trend in land share. Similarly, an increasing trend in human capital share is compensated by a decreasing trend in...

We consider a model of factor saving innovations and study the effects of exogenous changes in labor supply. In a biased innovations setting, as economies accumulate capital, labor becomes relatively scarce and expensive. As a consequence, incentives for labor saving and capital using...

We propose a one-good model where technological change is factor saving andcostly. We consider a production function with two reproducible factors: physical capital and human capital, and one not reproducible factor. The main predictions of the model are the following: (a) The elasticity of...

We present an endogenous growth model where innovation are factor saving. Tecnologies can be changed paying a cost so, tecnological change take place only if the benefits are larger than the cost. Since the gains derived from factor saving innovations depend on factor abundance, biased...

The industrial revolution and the subsequent industrialization of the economies occurred fi…rst in temperate regions. We argue that this and the associated positive correlation between absolute latitude and GDP per capita is due to the fact that countries located far from the equator suffered...