The objective of this dissertation is to theoretically and empirically examine the role of firm heterogeneity in terms of productivity and skill-intensity in th

A firm's productivity is composed of two parts: pure technical change and location-specific (agglomeration) externalities. Regional productivity is thus an aggr

The thesis is organized as follows. Chapter 2 contains a survey of the three most in‡fluential models on fi…rm heterogeneity and of the most important empir