Technical efficiency of Spanish manufacturing firms: a panel data approach
This paper estimates the levels of technical efficiency reached by Spanish manufacturing firms, through an econometric estimation of frontier production functions for fifteen sectors of activity, and also, obtains other relevant technological measurements of these productive processes such as the scale and the technical progress parameters. The methodology used is the panel data methods (Schmidt and Sickles, 1984). The statistical source is provided by the Survey on Business Strategies (Encuesta Sobre Estrategias Empresariales), a panel of data covering 855 Spanish manufacturing firms observed over the period 1990-1994. Our econometric results confirm the great heterogeneity in the firms' efficiency, the predominance of constant returns to scale and the great rate of technological progress.