A Non-parametric Examination of Capital-Skill Complementarity

Abstract

This paper uses non-parametric kernel methods to construct observation-specific elasticities of substitution for a balanced panel of 73 developed and developing countries to examine the capital–skill complementarity hypothesis. The exercise shows some support for capital–skill complementarity, but the strength of the evidence depends upon the definition of skilled labour and the elasticity of substitution measure being used. The added flexibility of the non-parametric procedure is also capable of uncover ing that the elasticities of substitution vary across countries, groups of countries and time periods.