In high-tech industries, one important method of diffusion is through employee mobility: many of the entering firms are started by employees from incumbent firms using some of their former employers' technological know-how. This paper explores the effect of incorporating this mechanism in a...

This paper estimates the nature and effects of quality and cost innovations in the early automobile, personal computer, rigid disk drive, computer monitor, and computer printer industries using industry-level data on firm numbers, price, quantity, and quality along with an equilibrium model of...