Theories of Development Economics

Linear stages of growth model

The earliest theory of development economics, the linear-stages-of-growth model was first formulated in the 1950s by W. W. Rostow in The Stages of Growth. This theory focuses on the accelerated accumulation of capital, through the utilization of both domestic and international savings as a means of spurring investment, as the primary means of promoting economic growth and, thus, development.

The linear-stages-of-growth model posits that there are a series of five consecutive stages of development which all countries must go through during the process of development. These stages are “the traditional society, the pre-conditions for take-off, the take-off, the drive to maturity, and the age of high mass-consumption” This theory gave further rise to the Harrod-Domar Model which serves to explain through mathematics the basic assumption that improved capital investment leads to greater economic growth.

This theory has been criticized for not recognizing that, while necessary, capital accumulation is not a sufficient condition for development. That is to say that this early and simplistic theory failed to account for political, social and institutional obstacles to development. Furthermore, this theory was developed in the early years of the Cold War and was largely derived from the successes of the Marshall Plan. This has led to the major criticism that the theory assumes that the conditions found in developing countries are the same as those found in post-WWII Europe.

Structural change theory

Structural-change theory deals with policies focused on changing the economic structures of developing countries from being primarily comprised of subsistence agricultural practices to being a “more modern, more urbanized, and more industrially diverse manufacturing and service economy.” There are two major forms of structural-change theory; W. Lewis’ two-sector surplus model, which views agrarian societies as consisting of large amounts of surplus labor which can be utilized to spur the development of an urbanized industrial sector, and Hollis Chenery’s patterns of development approach, which is the empirical analysis of the “sequential process through which the economic, industrial and institutional structure of an underdeveloped economy is transformed over time to permit new industries to replace traditional agriculture as the engine of economic growth.”

Structural-change approaches to development economics have faced criticism for their emphasis on urban development at the expense of rural development which can lead to a substantial rise in inequality between internal regions of a country. The two-sector surplus model, which was developed in the 1950s, has been further criticized for its underlying assumption that predominantly agrarian societies suffer from a surplus of labor. Actual empirical studies have shown that such labor surpluses are only seasonal and drawing such labor to urban areas can result in a collapse of the agricultural sector. The patterns of development approach has been criticized for lacking a theoretical framework.

International dependence theory

International dependence theories gained prominence in the 1970s as a reaction to the failure of earlier theories to lead to widespread successes in international development. Unlike earlier theories, international dependence theories have their origins in developing countries and view obstacles to development as being primarily external in nature, rather than internal. These theories view developing countries as being economically and politically dependent on more powerful, developed countries which have an interest in maintaining their dominant position. There are three different, major formulations of international dependence theory; neocolonial dependence theory, the false-paradigm model and the dualistic-dependence model. The first formulation of international dependence theory, neocolonial dependence theory has its origins in Marxism and views the failure of many developing nations to undergo successful development as being the result of the historical development of the international capitalist system.

Neoclassical theory

First gaining prominency with the rise of several conservative governments in the West during the 1980s, neoclassical theories represents a radical shift away from International Dependence Theories. Neoclassical theories argue that governments should not intervene in the economy; in other words, these theories are claiming that an unobstructed free market is the best means of inducing rapid and successful development. Competitive free markets unrestrained by excessive government regulation are seen as being able to naturally ensure that the allocation of resources occurs with ergdgthe greatest efficiency possible and the economic growth is raised and stabilized.

It is important to note that there are several different approaches within the realm of neoclassical theory, each with subtle, but important, differences in their views regarding the extent to which the market should be left unregulated. These different takes on neoclassical theory are the free market approach, public-choice theory, and the market-friendly approach. Of the three, both the free-market approach and public-choice theory contend that the market should be totally free, meaning that any intervention by the government is necessarily bad. Public-choice theory is arguably the more radical of the two with its view, closely associated with libertarianism, that governments themselves are rarely good and therefore should be as minimal as possible.

The market-friendly approach, unlike the other two, is a more recent development and is often associated with the World Bank. This approach still advocates free markets but recognizes that there are many imperfections in the markets of many developing nations and thus argues that some government intervention is an effective means of fixing such imperfections

Topics of Research

Development economics also includes topics such as Third World debt, and the functions of such organisations as the International Monetary Fund and World Bank. Many economists in this field are interested in ways of promoting stable and sustainable growth in poor countries and areas, by promoting self reliance and education in some of the lowest income countries in the world. Where economic issues merge with social and political ones, it is referred to as development studies.

Criticisms

Per capita Gross Domestic Product (GDP per head) is used by many developmental economists as an approximation of general national well-being. However, these measures are criticized as not measuring economic growth well enough, especially in countries where there is much economic activity that is not part of measured financial transactions (such as housekeeping and self-homebuilding), or where funding is not available for accurate measurements to be made publicly available for other economists to use in their studies (including private and institutional fraud, in some countries).

Even though per-capita GDP as measured can make economic well-being appear smaller than it really is in some developing countries, the discrepancy could be still bigger in a developed country where people may perform outside of financial transactions an even higher-value service than housekeeping or homebuilding as gifts or in their own households, such as counseling, lifestyle coaching, a more valuable home décor service, and time management. Even free choice can be considered to add value to lifestyles without necessarily increasing the financial transaction amounts. More recent theories of Human Development have begun to see beyond purely financial measures of development, for example with measures such as medical care available, education, equality, and political freedom.

One measure used is the Genuine Progress Indicator, which relates strongly to theories of distributive justice. Actual knowledge about what creates growth is largely unproven; however recent advances in econometrics and more accurate measurements in many countries is creating new knowledge by compensating for the effects of variables to determine probable causes out of merely correlational statistics.

Recent developments

The most prominent contemporary development economist is perhaps the Nobel laureate Amartya Sen. Recent theories revolve around questions about what variables or inputs correlate or affect economic growth the most: elementary, secondary, or higher education, government policy stability, low tariffs, fair court systems, available infrastructure, availability of medical care, prenatal care and clean water, ease of entry and exit into trade, and equality of income distribution (for example, as indicated by the Gini coefficient), and how to advise governments about macroeconomic policies, which include all policies that affect the economy.

Education enables countries to adapt the latest technology and creates an environment for new innovations. The cause of limited growth and divergence in economic growth lies in the high rate of acceleration of technological change by a small number of developed countries. These countries’ acceleration of technology was due to increased incentive structures for mass education which in turn created a framework for the population to create and adapt new innovations and methods. Furthermore, the content of their education was composed of secular schooling that resulted in higher productivity levels and modern economic growth.

References

Todaro, Michael and Stephen Smith. Economic Development. 9th ed. Addison-Wesley series in economics, 2006

Arndt, H.W. Economic Development: A Semantic History. “Economic Development and Cultural Change.” Vol. 29, No. 3. (Apr., 1981), pp. 457-466. Chicago: The Chicago University Press.

Rostow, W.W. The Five Stages of Growth. Development and Underdevelopment: The Political Economy of Global Inequality. 3rd ed. pp. 123-131. Eds. Seligson, Mitchell and John Passe-Smith. Boulder, CO: Lynne Rienner Publishers, 2003.

Further reading

Jomo K.S. (2005), Pioneers of Development Economics: Great Economists on Development, Zed Books - the contributions of economists such as Marshall and Keynes, not normally considered development economists

Gerald M. Meier (2005), Biography of a Subject: An Evolution of Development Economics, Oxford University Press

Gerald M. Meier, Dudley Seers[editors] (1984), Pioneers in Development, World Bank

Jeffrey D. Sachs (2005), The End of Poverty: Economic Possibilities for Our Time, Penguin Books

Ben Fine and Jomo K.S. (eds, 2005), The New Development Economics: Post Washington Consensus Neoliberal Thinking, Zed Books

Peter Griffiths (2003), The Economist's Tale: A Consultant Encounters Hunger and the World Bank, Zed Books

George Mavrotas and Anthony Shorrocks (eds, 2007), Advancing Development: Core Themes in Global Development, Palgrave Macmillan

World Institute for Development Economics Research Publications/Discussion Papers
The Center for Global Development

Easterly, William (2002), Elusive Quest for Growth: Economists' Adventures and Misadventures in the Tropics, The MIT Press