Sunday, March 8, 2009

Increased inequality

China’s growth has been so rapid that virtually every household has benefited significantly, fueling the steep drop in poverty. However, different people have benefited to very different extents, so that inequality has risen during the reform period. This is true for inequality in household income or consumption, as well as for inequality in important social outcomes such as health status or educational attainment. Concerning household consumption, the Gini measure of inequality increased from 0.31 at the beginning of reform to 0.45 in 2004. To some extent this rise in inequality is the natural result of the market forces that have generated the strong growth; but to some extent it is "artificial" in the sense that various government policies exacerbate the tendencies toward higher inequality, rather than mitigate them. Changes to some policies could halt or even reverse the increasing inequality.


The Nobel Prize-winning economist Sir Arthur Lewis noted that "development must be inegalitarian because it does not start in every part of the economy at the same time" in 1954. China classically manifests two of the characteristics of development that Lewis had in mind: rising return to education and rural-urban migration. As an underdeveloped country, China began its reform with relatively few highly educated people, and with a small minority of the population (20%) living in cities, where labor productivity was about twice the level as in the countryside.


The large productivity and wage gap between cities and countryside also drives a high volume of rural-urban migration. Lewis pointed out that, starting from a situation of 80% rural, the initial shift of some people from low-productivity agriculture to high productivity urban employment is disequalizing. If the flow continues until the population is more than 50% urban, however, further migration is equalizing. This pattern is very evident in the history of the U.S., with inequality rising during the rapid industrialization period from 1870-1920, and then declining thereafter. So, the same market forces that have produced the rapid growth in China predictably led to higher inequality. But it is important to note that in China there are a number of government policies that exacerbate this tendency toward higher inequality and restrict some of the potential mechanisms that would normally lead to an eventual decline in inequality.

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