After an introductory discussion of economic growth, the book examines neoclassical growth theories, from Solow-Swan in the 1950s and Cass- Koopmans in the 1960s to more recent refinements; this is followed by a discussion of extensions to the model, with expanded treatment in this edition of heterogenity of households. The book then turns to endogenous growth theory, discussing, among other topics, models of endogenous technological progress (with an expanded discussion in this edition of the role of outside competition in the growth process), technological diffusion, and an endogenous determination of labor supply and population. The authors then explain the essentials of growth accounting and apply this framework to endogenous growth models. The final chapters cover empirical analysis of regions and empirical evidence on economic growth for a broad panel of countries from 1960 to 2000. The updated treatment of cross-country growth regressions for this edition uses the new Summers-Heston data set on world income distribution compiled through 2000 INDICE Introduction 1 1. Growth Models with Exogenous Saving Rates (the Solow-Swan Model) 2. Growth Models with Consumer Optimization (the Ramsey Model) 3. Extensions of the Ramsey Growth Model 4. One-Sector Models of Endogenous Growth 5, Two-Sector Models of Endogenous Growth 6. Technological Change: Models with an Expanding Variety of Products 7. Technological Change: Schumpterian Models of Quality Ladders 8. The Diffusion of Technology 9. Labor Supply and Population 10. Growth Accounting 11. Empirical Analysis of Regional Data Sets 12. Empirical Analysis of a Cross-Section of Countries