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Population-based Poverty

The notion that a bigger population is good because it increases GDP (i.e. the total throughput of goods) is still alive and well. Australian PM Kevin Rudd, for example, lists population size as one of the “3Ps” assumed to produce prosperity.  The following article cites Partha Dasgupta, professor Emeritus of Economics at the University of Cambridge, dispeling this myth and establishing that population growth produces greater poverty rather than prosperity.

Note: The sentences most relevant to the population issue are enboldened for this publication.


Getting India wrong“, Prospect Magazine, July 15, 2013

~ “Critics and supporters of the country’s economic liberalisation make the same error—they forget about pollution and population” – Partha Dasgupta  

A central message of modern development economics is the importance of income growth. By this, economists tend to mean growth in gross domestic product, or the market value of what a country produces (including services). In theory, rising GDP creates employment and investment oppor­tunities; and as incomes grow, both citizens and government are increasingly able to set aside funds for the things that make for a good life. One of the tasks of government is to establish conditions that encourage this kind of economic development. Its role should thus be active (protecting the rule of law; investing in infrastructure, health and education) and passive (permitting markets to operate). Of course, GDP growth in itself doesn’t guarantee an equitable distribution of incomes, but that problem can be offset by government taxes and transfers. Or so the argument would have it.

But this account is inadequate, as the experience of India shows. In the early 1980s the government of India initiated a pro­gramme of economic liberalisation. It is now widely acknowledged that the result­ing structural reforms led to the impres­sive economic growth of recent years. Since 2000 GDP has grown at an average annual rate of 7.6 per cent and been accompanied by improvements in a number of other eco­nomic indicators. The proportion of people whose incomes are below the country’s offi­cial poverty line declined from 45 per cent in the early 1980s to 28 per cent in 2005. The decline is impressive, but the latter figure tells us that the country still harbours wide­spread deprivation. 

India’s continued inequities in health and education have been much written about. As the World Bank noted recently, 45 per cent of Indian children under five are under­weight and 25 per cent of women remain illit­erate, figures that are worse than those in a number of countries that are poorer in terms of GDP per head. So, if you look at how fig­ures measuring the quality of life in India have changed since the early 1980s, the coun­try would appear to be a winner. On the other hand if you compare the current figures for the same quality of life indicators to those in some countries where GDP per head is lower, India would seem to be a loser. Depending on your perspective, the proverbial glass would appear to be either half full or half empty.  

Jagdish Bhagwati and Arvind Panagar­iya, two prominent experts on the Indian economy, are known enthusiasts of the gov­ernment’s liberalisation programme. In their new book they target a number of “myths” (their term) that critics have created about India’s recent performance in health, educa­tion and the distribution of income. The book is written with zest and confidence, even if marred by a combative and self-adulatory style, but the evidence they have collated is deployed effectively.

Bhagwati and Panagariya insist that two stages of reforms are necessary for success­ful long-term economic development. First, there are to be what the authors call “Track I” reforms, aimed at enabling GDP growth and pulling up the poor. “Track II” reforms are aimed at providing healthcare, educa­tion and guaranteed employment in rural areas—all of which would be made possible by increasing revenues from higher incomes. Without the former phase, Bhagwati and Panagariya argue, there would be no finance to produce the latter benefits. In their view the fast growth rates emanating from Track I reforms enable the Indian government to move now to Track II. 

Jean Drèze and Amartya Sen, also prom­inent experts on the Indian economy, are well-known critics of the liberalisation pro­gramme. Over the past 25 years they have been collaborating on the study of poverty and hunger, with India as their focus. Their target is the neglect by successive govern­ments of health and education, which they see as having given rise to the enormous ineq­uities that characterise the Indian economy. In contrast to Bhagwati and Panagariya, who study changes over time in India’s socio-eco­nomic indicators, Drèze and Sen compare the current state of affairs in India with other poor countries and find India wanting. For Drèze and Sen, the sequencing of Track I and Track II reforms is repugnant. In their view a far better pattern of economic devel­opment is one in which GDP growth is to an extent traded off for more rapid improve­ments in health and education. They review a large body of evidence to show that, for­tunately, the required trade-off is a lot less than what Bhagwati and Panagariya are able to imagine, in as much as improvements in health and education raise human productiv­ity and thereby growth rates in GDP. Drèze and Sen are exasperated with the patience the country’s poor have displayed in waiting for better times, so their concluding chapters are on the role deliberative democracy could play in stirring the electorate into action. Their book is passionate, although the style is blighted by an undue fondness for literary allusions and a reluctance to acknowledge prior work by others not in their coterie.

Despite the vastly contrasting readings of the Indian experience, the analyses in the two books are based on a shared belief, one that is hallowed by tradition but is, I am sorry to say, utterly misconceived. The model implicit in the books is one where labour (more broadly human capital), knowledge and manufactured capital are the basis of production, exchange and consumption. Nature doesn’t get a look in except as a bit player, nor is there the possibility that population growth could contribute through habitat destruction to the persistence of poverty and hunger.   [cf. Peter McDonald’s assumptions – Mark O’Connor ]

The problem that undermines both books is that neither GDP, nor the many other ad hoc indicators of human well-being that  have been advanced in recent years, are suitable indicators of economic development. Instead, it can be shown that development should be assessed on the basis of a comprehensive notion of wealth (adjusted for the distribution of wealth in the economy). By wealth I mean the social worth of an economy’s stock of capital assets, comprising manufactured capital (roads, ports, machinery, and so on), human capital (population size and composition, education, health), knowl­edge (the arts, humanities, and sciences), and natural capital (ecosystems, sources of water, the atmosphere, land, sub-soil resources). If institutions are weak or simply bad, the social worth of those same assets would be small, and that would translate into a low value of wealth.

Wealth is the measure of an economy’s totality of assets. It should, then, come as no surprise that wealth per head (adjusted for the distribution of wealth) tracks well-being across the generations exactly: wealth increases over a period of time if and only if well-being increases over that same period. So, if you interpret sustainable development to require that well-being across the present and future generations should not decline, you should be checking whether wealth per head (adjusted for the distribution of wealth) is increasing and is likely to increase in the future. Movements in GDP over time or in health and education would tell you nothing about any of this.

To illustrate the salience of wealth, recall that GDP is the market value of the flow of final goods and services during a year. The rogue word is “gross,” for the depreciation of capital assets is not counted. If a wetland is drained to make way for a shopping mall, the construction of the latter contributes to GDP, but the destruction of the former goes unrecorded. If the social worth of the mall were less than the social value of the wetland, the economy would have become poorer (wealth would have declined) and potential well-being across the present and future gen­erations would mimic that decline, but GDP would signal otherwise. The UN’s seemingly more humane human development index adopts the same point of view, which is to say it misleads in the same way. An economy’s GDP could be made to grow and its human development index made to improve by “mining” its natural capital.

Bhagwati and Panagariya see government restrictions everywhere, while Drèze and Sen can’t take their eyes off poverty and inequal­ity. But there are some of us who can’t help also noting the importance of “externalities,” which are the unaccounted consequences for others (including future generations) of decisions made by each one of us about reproduction, consumption, and use of the natural environment.

In recent years scholars have traced the links between those externalities and factors such as acute poverty, population growth, and deteriorations in natural capital. None of these three factors directly causes the oth­ers; rather, each influences, and is in turn influenced by, the others. For example, a deterioration in the way a community man­ages the local woodland and water source or in the way the government adjudicates over property rights to forest land may mean an increase in the need for “hands” in each household, which then puts further pressure on the woodland and water source; and so on. (Empowering women and expanding edu­cation certainly help to reduce fertility, but the “externalities” or spill-over effects just alluded to are a potent presence.)

A vast number of case studies have uncovered deep connections between the per­sistence (indeed, often worsening) of rural poverty in the Indian sub-continent and the habitat destruction that has accompanied economic and population growth. Those started with the vital works of the Indian economists Narpat S Jodha and Kanchan Chopra, and over the past decade in publica­tions in the journal Environment and Devel­opment Economics by, among others, young economists associated with the South Asian Network of Development and Environmen­tal Economists.

These scholars have found that relation­ships between people and natural resources depend greatly on the site and context. They are also non-linear; which means that the linear extrapolations of empirical data that economists have been known to make in recent years—as in the claim that “every 1 per cent increase in GDP per head reduces poverty by around 1.7 per cent”—are unwar­ranted. It also means that interactions between people and the environment har­bour tipping points, where an unexpected collapse of the rural resource base means a sudden dramatic loss in a community’s wealth. Its source could have been popu­lation pressure and unprotected property rights over a fragile resource base. Civic strife has been known to follow attempts at migra­tion by local populations.

Neither book has been informed by those findings. Indeed neither even broaches the economic distress associated with high pop­ulation growth in a poor society (in this cen­tury India’s population has grown at around 1.6 per cent annually—an additional 16m people or more per year). Nor does either book study the massive transformation of India’s ecological landscape in recent dec­ades as a factor in the lives of the country’s poorest. Drèze and Sen do note environmen­tal problems, but only in passing, and in such banalities as that “the risk of climate change may affect the lives of people across the world in very diverse ways, making the exacerba­tion of inequity one of the primary concerns about the consequences of unchecked cli­matic developments.”

It is still early days in the empirical study of the wealth of nations. But in a recent paper, Kenneth Arrow, Lawrence Goulder, Kevin Mumford, Kirsten Oleson and I arrived at the very tentative estimate that during 1995-2000 wealth per head in India increased at an average annual rate of under 0.2 per cent, a far cry from the high rates of growth in GDP per head during that same period. Even that low figure is, in all like­lihood, an overestimate. Among natural capital assets we were able to include only forests (as sources of timber but not for the many ecological services they provide), car­bon in the atmosphere, land and sub-soil resources. A great swath of ecosystems and sources of water, which many studies show have degraded in recent years, were left unac­counted for because national data are simply not there. We should conclude that wealth per head in India may well have declined in recent decades.

In April an “expert group,” which I chaired and which was convened by the Indian government under a prime ministerial directive, released its report on a framework for “greening” India’s national accounts. It recognises the necessity of presenting figures for GDP and consumption, but takes wealth to be the basis for economic evaluation and presents a road map for transforming the way national statistics are collected and col­lated. India’s “12th Five Year Plan,” also pub­lished recently, has taken note of the report and has accepted that national accounts need serious revision and extension. Should all that come about, future assessments of economic performance will look very differ­ent from the ones in these two books.

Poverty can’t be understood by mere quantification of its incidence. Measur­ing wealth requires that assets are valued, and that can’t be done unless there is some understanding of the socio-environmen­tal processes at work, for market prices can mislead greatly. It’s all well and good to write eloquently about the role of deliberative democracy in furthering economic develop­ment, as Drèze and Sen do, but the delibera­tions will be of little instrumental use if they ignore the role that high population growth and environmental destruction play in the persistence of poverty. 

If the methodology adopted in these two books continues to be the orthodoxy, devel­opment thinking will remain tethered to cross-country comparisons of quality of life. Meanwhile the links between population growth, acute poverty, and environmental degradation will remain unexplored, and “sustainable development” will fade into a fashionable term aired only at cocktail parties.

08/04/2013 – 18:07


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