Evolution of Development Economics: From Vicious Circles to Quality of Life

Economics did not always concern itself with why some nations stay poor while others grow rich. That question only became a formal field of study after the Second World War, when newly independent countries across Asia and Africa needed practical answers about how to lift their populations out of poverty. The discipline that emerged, development economics, has since travelled a long road, moving from a narrow focus on raising national income to a much broader concern with how well people actually live. This shift in thinking explains a great deal about how we measure progress today, and why classifying any country as simply “developed” or “developing” is harder than it sounds.

Post-war origins and the vicious circle of poverty
Schumpeter’s influence on development thinking
From growth to sustainable development
The Human Development Index and the capability approach
Multi-dimensional wellbeing and sustainability
Challenges in measuring development
Why the labels are subjective
The proliferation of categories

Post-war origins and the vicious circle of poverty

Development economics took shape in the late 1940s and 1950s, a period when much of the world was being rebuilt and decolonised. Economists were preoccupied with a stubborn puzzle: why did poor countries seem unable to grow out of their poverty on their own? The most influential answer of that era was the idea of the vicious circle of poverty, developed by the economist Ragnar Nurkse in his 1953 work on capital formation in underdeveloped countries.

The logic is circular and self-reinforcing. A poor country has low incomes. Low incomes mean people can save very little, because almost all their money goes towards basic survival. Low savings mean low investment, which keeps productivity low. Low productivity keeps incomes low, and the circle closes. The country remains trapped not because its people lack effort, but because the structure of the economy offers no easy exit. A related idea from the same period, the low-level equilibrium trap, described how economies could settle into a stable but impoverished state and stay there.

This framing had real consequences for policy. If markets alone could not break the circle, then perhaps a deliberate, large push was needed, through public investment, planned industrialisation, or external aid. India’s own early Five-Year Plans were shaped by exactly this conviction that the state had to lead the breakout from poverty.

Schumpeter’s influence on development thinking

While Nurkse described the trap, the work of Joseph Schumpeter offered a vision of how economies could escape it. Schumpeter drew a sharp distinction between mere growth and genuine development. Adding more of the same, he argued, was not development at all. In his famous phrasing, you could add as many mail coaches in succession as you pleased and never get a railway. Real development, for Schumpeter, came from within the economic system as a qualitative leap, not a smooth quantitative increase.

The engine of that leap was the entrepreneur, the figure who introduces innovations: new products, new methods of production, new markets, new sources of supply. Schumpeter called this process creative destruction, where new ways of doing things displace the old and propel the economy to a higher level. He also stressed the role of credit, arguing that it was bank-created credit, rather than savings out of current income, that financed the investment behind innovation. This was an important corrective to the savings-centred view of the poverty trap. It suggested that breaking the circle was as much about institutions, finance, and enterprise as it was about raw capital.

From growth to sustainable development

For its first few decades, development was largely judged by a single number: Gross Domestic Product, or income per head. A country that grew its output was, by definition, developing. This was simple and measurable, and it dominated policy thinking well into the 1980s. But the measure carried a quiet flaw that became harder to ignore over time.

The problem is that GDP measures economic activity, not human wellbeing. Interestingly, even Simon Kuznets, who helped create the modern concept of national income accounting, warned that a nation’s welfare could scarcely be judged from a measurement of its national income. A country can post impressive growth figures while large parts of its population remain without decent healthcare, education, or clean water. Growth can also be environmentally destructive, exhausting natural resources and degrading ecosystems in ways the GDP figure never records.

The Human Development Index and the capability approach

The decisive break came in 1990, when the United Nations Development Programme introduced the Human Development Index, conceived by the economists Mahbub ul Haq and Amartya Sen. Their argument, rooted in Sen’s capability approach, was that development should be understood as the expansion of people’s real choices and freedoms, not just the size of their incomes. When people are healthy, educated, and able to live with dignity, they can do and become more.

The HDI captures this through three dimensions: a long and healthy life (measured by life expectancy), knowledge (measured by years of schooling), and a decent standard of living (measured by income per capita). It is far from perfect, since it still compresses a complicated reality into one number, but it shifted the entire conversation from “how much does the economy grow?” to “how well do people actually live?”

India’s own figures illustrate the value of this lens. In the 2025 Human Development Report, India ranked 130 out of 193 countries, with an HDI value of 0.685, placing it in the medium human development category and edging closer to the high-development threshold of 0.700. Life expectancy rose to 72 years and gross national income per capita more than quadrupled between 1990 and 2023. Yet the same report notes that inequality reduces India’s HDI by nearly 31 percent, one of the steepest losses in the region. A single average can hide enormous disparities underneath it.

Multi-dimensional wellbeing and sustainability

The HDI was only the beginning of a wider rethinking. Recognising that even it could mask uneven distribution, the UNDP later added a family of related measures. The Inequality-adjusted HDI discounts a country’s score for how unequally its achievements are spread. The Multidimensional Poverty Index, produced with the Oxford Poverty and Human Development Initiative, looks beyond income to identify overlapping deprivations in health, education, and living standards across ten indicators. By this measure, India lifted around 135 million people out of multidimensional poverty between 2015-16 and 2019-21, a result no income figure alone would reveal.

Sustainability has become the other major addition to the picture. The realisation that growth often comes at the planet’s expense gave rise to the concept of sustainable development, popularised by the 1987 Brundtland Report and later anchored in the United Nations Sustainable Development Goals. The UNDP now also publishes a Planetary pressures-adjusted HDI, which lowers a country’s score to reflect its carbon emissions and material footprint. The message is direct: development that wrecks the environment for future generations is not really development at all. This concern with multi-dimensional, long-term wellbeing has now reached the highest levels, with a UN expert group recently tasked with designing indicators that move beyond GDP entirely.

Challenges in measuring development

All of this raises an awkward question. If development is multi-dimensional, then how do we decide whether a country is “developed” or “developing” at all? It turns out there is no clean, universally agreed answer, and the categories themselves are more contested than most people assume.

Why the labels are subjective

The most common shortcut is income. The World Bank groups economies into low, lower-middle, upper-middle, and high income, based on gross national income per capita. This is convenient, but the thresholds themselves are chosen by people, not handed down by nature. There is no objective reason a particular income figure should mark the boundary between one category and the next. The Bank itself has acknowledged that the traditional grouping of countries into income categories has become less useful, calling instead for attention to the many facets of development across a whole spectrum.

The deeper problem is that income alone tells you little about quality of life. Some oil-rich states post very high incomes while scoring poorly on education, freedom, or equality. A country can be “high income” and still leave large sections of its population deprived. This is precisely why purely quantitative criteria have been criticised for ignoring distribution and non-economic factors entirely.

The proliferation of categories

Beyond the simple binary, international organisations have created a growing thicket of overlapping classifications: least developed countries, landlocked developing countries, small island developing states, and more. Academic research has noted how this proliferation of classifications often rests on criteria that are partly subjective. Whether a country counts as “small,” for instance, depends on where you choose to draw the population line, a decision open to several interpretations.

These labels are not just neutral descriptions. They carry real weight, because categories can determine eligibility for foreign aid, trade preferences, and concessional finance. They also reflect and reinforce power and hierarchy in the international system, which is part of why the World Bank has been rethinking the developing-versus-developed division and why figures like Hans Rosling argued the binary no longer reflects reality. India is a telling case here: a nuclear power with a thriving technology sector and a space programme, yet still home to the largest absolute number of people living in multidimensional poverty. Does a single label, “developing,” really capture that? Most economists would now say it cannot.

The honest conclusion is that development is a spectrum, not a switch. Where any country sits depends heavily on which dimension you choose to measure and which threshold you decide to apply. Those choices are made by humans, shaped by politics and convenience, and they remain open to legitimate debate.

What do you think? If a country can be wealthy by GDP yet leave millions deprived of health and education, which single indicator would you trust most to judge whether it is truly “developed”? And given how subjective the categories are, do you think the labels “developed” and “developing” still serve a useful purpose, or have they outlived their usefulness?

References

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Evolution of Development Economics: From Vicious Circles to Quality of Life

Table of Contents

Post-war origins and the vicious circle of poverty 🔗

Schumpeter’s influence on development thinking 🔗

From growth to sustainable development 🔗

The Human Development Index and the capability approach 🔗

Multi-dimensional wellbeing and sustainability 🔗

Challenges in measuring development 🔗

Why the labels are subjective 🔗

The proliferation of categories 🔗