Scholars, students, policy makers and business practitioners will find the theoretical and empirical models provided by this book helpful in understanding the economics of technical change at both the micro and macro levels. The major focus is on the question of how economic models can be used to study firms' behavior in the innovation process. The book also stresses strategies that policy makers can use to bolster technical change, technology diffusion, and economic growth. Goel covers the main topics in the economics of technical change in seven chapters. Each chapter introduces a discussion of key issues and research of the area. This is followed by detailed models on key topics. The reader is exposed to general issues, as well as a detailed insight into one or two of the most crucial issues. This provides a familiarity with the current state of economic research and unresolved questions in the area.