Localized Technological Progress And Industry Structure: An Empirical Approach

Modem innovation theory holds that the choice of production technique and technical porgress are unseparable activities so that technological progress can be described as localized. Based on this conception one has to expect an intra-sectoral firm heterogeneity in the production techniques applied and the technical efficiency achieved which contrasts to the presumption of intra-sectoral homogeneity as suggested by neoclassical theory. For measuring intra-industry heterogeneity an empirical tool is required which does not rest on the assumption of homogeneity, i.e. on a common production function for all firms under consideration. The method which does not require this assumption, Data Envelopment Analysis, is non-parametric, allows for firm-specific production functions and helps to determine differences in both technical efficiency and production technique applied. This tool is introduced in its basic formulation, its main features are discussed on ihe basis of modern innovation theory, and an empirical analysis for the German machinery, electronics and chemical industry is presented.