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Chapter 3 Classic Theories of Economic Growth and Development
Copyright ©2015 Pearson Education, Inc. All rights reserved Classic Theories of Economic Development: Four Approaches Linear stages of growth model Theories and Patterns of structural change International-dependence revolution Neoclassical, free market counterrevolution
Copyright ©2015 Pearson Education, Inc. All rights reserved Development as Growth and Linear-Stages Theories A Classic Statement: Rostow’s Stages of Growth Harrod-Domar Growth Model (sometimes referred to as the AK model)
Copyright ©2015 Pearson Education, Inc. All rights reserved.3-4 The Harrod-Domar Model - Simplified Version
Copyright ©2015 Pearson Education, Inc. All rights reserved.3-5 The Harrod-Domar Model - Simplified Version
Copyright ©2015 Pearson Education, Inc. All rights reserved.3-6 Equation 3.7 is also often expressed in terms of gross savings, in which case the growth rate is given by (3.7’) where δ is the rate of capital depreciation But there is now growing evidence of “per capita income convergence,” weighting changes in per capita income by population size (Also, in chapter 3, we return to examine the concept of conditional convergence when we study the Solow model) The Harrod-Domar Model – Incorporating Capital Depreciation
Copyright ©2015 Pearson Education, Inc. All rights reserved.3-7 Criticisms of the Stages Model Necessary versus sufficient conditions
Copyright ©2015 Pearson Education, Inc. All rights reserved Structural-Change Models The Lewis two-sector model
Copyright ©2015 Pearson Education, Inc. All rights reserved.3-9 Figure 3.1 The Lewis Model of Modern-Sector Growth in a Two-Sector Surplus-Labor Economy
Copyright ©2015 Pearson Education, Inc. All rights reserved.3-10 Criticisms of the Lewis Model Rate of labor transfer and employment creation may not be proportional to rate of modern-sector capital accumulation Surplus labor in rural areas and full employment in urban? Institutional factors? Assumption of diminishing returns in modern industrial sector
Copyright ©2015 Pearson Education, Inc. All rights reserved.3-11 Figure 3.2 The Lewis Model Modified by Laborsaving Capital Accumulation: Employment Implications
Copyright ©2015 Pearson Education, Inc. All rights reserved.3-12 Empirical Patterns of Development - Examples Switch from agriculture to industry (and services) Rural-urban migration and urbanization Steady accumulation of physical and human capital Population growth first increasing and then decreasing with decline in family size
Copyright ©2015 Pearson Education, Inc. All rights reserved The International- Dependence Revolution The neocolonial dependence model –Legacy of colonialism, Unequal power, Core-periphery The false-paradigm model –Pitfalls of using “expert” foreign advisors who misapply developed-country models The dualistic-development thesis –Superior and inferior elements can coexist; Prebisch- Singer Hypothesis Criticisms and limitations –Does little to show how to achieve development in a positive sense; accumulating counterexamples
Copyright ©2015 Pearson Education, Inc. All rights reserved The Neoclassical Counterrevolution: Market Fundamentalism Challenging the Statist Model: Free Markets, Public Choice, and Market-Friendly Approaches –Free market approach –Public choice approach –Market-friendly approach Main Arguments –Denies efficiency of intervention –Points up state owned enterprise failures –Stresses government failures –Traditional neoclassical growth theory - with diminishing returns, cannot sustain growth by capital accumulation alone
Copyright ©2015 Pearson Education, Inc. All rights reserved Classic Theories of Development: Reconciling the Differences Governments do fail, but so do markets; a balance is needed Must attend to institutional and political realities in developing world Development economics has no universally accepted paradigm Insights and understandings are continually evolving Each theory has some strengths and some weaknesses
Copyright ©2015 Pearson Education, Inc. All rights reserved.3-16 Concepts for Review Autarky Average product Capital-labor ratio Capital-output ratio Center Closed economy Comprador groups Dependence Dominance Dualism False-paradigm model Free market Free-market analysis Harrod-Domar growth model Lewis two-sector model Marginal product Market failure
Copyright ©2015 Pearson Education, Inc. All rights reserved.3-17 Concepts for Review (cont’d) Market-friendly approach Necessary condition Neoclassical counterrevolution Neocolonial dependence model Net savings ratio New political economy approach Open economy Patterns-of-development analysis Periphery Production function Public-choice theory Self-sustaining growth Solow neoclassical growth model Stages-of-growth model of development Structural-change theory Structural transformation Sufficient condition Surplus labor Underdevelopment
Copyright ©2015 Pearson Education, Inc. All rights reserved.3-18 Appendix 3.1: Components of Economic Growth Capital Accumulation, investments in physical and human capital –Increase capital stock Growth in population and labor force Technological progress –Neutral, labor/capital-saving, labor/capital augmenting
Copyright ©2015 Pearson Education, Inc. All rights reserved.3-19 Figure A3.1.1 Effect of Increases in Physical and Human Resources on the Production Possibility Frontier
Copyright ©2015 Pearson Education, Inc. All rights reserved.3-20 Figure A3.1.2 Effect of Growth of Capital Stock and Land on the Production Possibility Frontier
Copyright ©2015 Pearson Education, Inc. All rights reserved.3-21 Figure A3.1.3 Effect of Technological Change in the Agricultural Sector on the Production Possibility Frontier
Copyright ©2015 Pearson Education, Inc. All rights reserved.3-22 Figure A3.1.4 Effect of Technological Change in the Industrial Sector on the Production Possibility Frontier
Copyright ©2015 Pearson Education, Inc. All rights reserved.3-23 Appendix 3.2 The Solow Neoclassical Growth Model
Copyright ©2015 Pearson Education, Inc. All rights reserved.3-24 Appendix 3.2 The Solow Neoclassical Growth Model
Copyright ©2015 Pearson Education, Inc. All rights reserved.3-25 Appendix 3.2 The Solow Neoclassical Growth Model
Copyright ©2015 Pearson Education, Inc. All rights reserved.3-26 Figure A3.2.1 Equilibrium in the Solow Growth Model
Copyright ©2015 Pearson Education, Inc. All rights reserved.3-27 Figure A3.2.2 The Long-Run Effect of Changing the Saving Rate in the Solow Model
Copyright ©2015 Pearson Education, Inc. All rights reserved.3-28 Appendix 3.3 Endogenous Growth Theory Motivation for the new growth theory The Romer model
Copyright © 2009 Pearson Addison-Wesley. All rights reserved. Chapter 3 Classic Theories of Economic Growth and Development.
Copyright © 2006 Pearson Addison-Wesley. All rights reserved. Chapter 3 Classic Theories of Economic Development.
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