Amartya Sen is an economist and philosopher whose work has done more than any other to move the study of development away from output and income and towards what people are actually able to do and to be. His two central contributions — the capability approach and the entitlement approach to famine — have passed well beyond economics into sociology, political theory, public health and the practice of governments and international agencies.
The unifying idea is that welfare must be assessed in terms of freedom: not the commodities a person holds, nor the utility they report, but the real alternatives available to them. That shift reframes poverty as capability deprivation rather than low income, and development as the removal of the unfreedoms that keep people from living lives they have reason to value.
Life and intellectual formation
Sen was born in 1933 at Santiniketan, in the milieu of Rabindranath Tagore's university, where his early schooling encouraged the pluralism and dislike of narrow identity that mark his later writing. As a boy of nine he witnessed the Bengal famine of 1943, in which perhaps three million people died — an experience he returned to decades later with the tools to explain it. He studied at Presidency College, Calcutta, and at Trinity College, Cambridge, and taught at Jadavpur, Delhi, the London School of Economics, Oxford and Harvard, serving as Master of Trinity College from 1998. He was awarded the Nobel Memorial Prize in Economic Sciences in 1998 and the Bharat Ratna in 1999.
His method is characteristic: formal argument in the tradition of welfare economics and social choice theory, wedded to moral philosophy and to close attention to Indian and comparative empirical detail.
Functionings, capabilities and development as freedom
The capability framework distinguishes three things. Commodities are the goods and resources a person commands. Functionings are the states of being and doing that a person actually achieves — being adequately nourished, being literate, being free of avoidable disease, taking part in the life of the community, appearing in public without shame. Capabilities are the sets of functionings a person is genuinely able to achieve: the range of lives open to them, and hence their substantive freedom.
The distinction between resources and functionings is doing the real work. Identical incomes yield very different lives depending on conversion factors: a person with a disability requires more income to achieve mobility, a woman may face social restrictions that no wage removes, an unsafe neighbourhood limits what schooling can deliver. This is why Sen refuses to treat income as more than an instrument.
Development as Freedom (1999) develops the political corollary. Freedom is both the end of development — its constitutive purpose — and its principal means, since free people are effective agents of change. Sen identifies five instrumental freedoms that reinforce one another: political freedoms and civil rights, economic facilities, social opportunities such as education and health care, transparency guarantees, and protective security. Running through the book is his insistence on agency: people are not patients to be provided for but agents whose participation is the engine of development.
The entitlement approach to famine
Poverty and Famines (1981) attacked the received wisdom that famines are caused by a decline in food availability. Examining the Bengal famine of 1943, the Ethiopian famines of the early 1970s, the Sahel and the Bangladesh famine of 1974, Sen showed that aggregate food supply was often adequate or even above-average in famine years, and that food was frequently exported from famine-stricken regions.
What fails in a famine is not supply but entitlement — a person's command over food through the legitimate means available to them: what they grow, what they can buy with wages, what they can exchange, what the state transfers to them. An exchange entitlement failure occurs when wages collapse, prices spiral, employment vanishes or livestock lose value, destroying the ability of a particular occupational group to obtain food that physically exists nearby. In Bengal, war-driven inflation, speculative hoarding and a boom that raised urban purchasing power priced rural labourers, fishermen and craftsmen out of the market.
The famine is therefore an economic and political event, not a natural one. Sen's best-known corollary follows: no substantial famine has occurred in a functioning democracy with a free press and opposition politics, because governments that face elections and scrutiny cannot afford inaction. Prevention lies less in food stocks than in employment guarantees, cash transfers and public accountability — an argument visible in India's later employment and food security legislation.
Missing women and gender inequality
Sen extended the same logic to gender. In a widely discussed intervention of 1990 he calculated, by comparing observed sex ratios against those expected where women receive comparable care, that more than a hundred million women were missing from the populations of Asia and North Africa. The deficit reflects not a single dramatic event but the cumulative effect of unequal intra-household allocation of food, health care and attention, compounded later by sex-selective abortion.
His analysis of the household as a site of cooperative conflict — arrangements that are jointly beneficial yet unequally distributed, in which perceived contribution shapes bargaining position — links directly to feminist sociology. He also argued that women's literacy, employment outside the home and property rights raise their agency and, through it, reduce child mortality and fertility more effectively than income growth alone.
The argumentative Indian and public reasoning
The Argumentative Indian (2005) reads India's intellectual history as a long tradition of heterodoxy, debate and dissent — Buddhist councils, Ashokan edicts, Akbar's discussions of religion, the sceptical strands within Hindu texts themselves. The claim is not merely antiquarian: democracy, for Sen, is government by discussion, and its Indian roots are indigenous rather than imported.
This connects to The Idea of Justice (2009), where he contrasts an institution-focused search for perfectly just arrangements with a comparative approach that asks how to reduce manifest injustice, and to Identity and Violence (2006), which argues that people hold plural affiliations and that violence follows from the imposition of a singular identity. Public reasoning — open, informed, contestatory — is his answer both to the weighting of capabilities and to sectarianism.
Critique of utilitarian and income-based measures
Sen's positive framework rests on a double critique. Against utilitarianism he argues that mental satisfaction is a poor guide to well-being, because the persistently deprived adapt their expectations downwards — the exploited labourer or the subordinated wife may report contentment — and because summing utilities is indifferent to how it is distributed. Against income-based measures such as GNP per head he objects that they say nothing about distribution, ignore unpaid work, and above all confuse the means of living with living itself. His collaboration with Mahbub ul Haq produced the Human Development Index and the UNDP Human Development Reports, which operationalised the shift by placing longevity and education beside income; his work with Jean Drèze on India documented how states such as Kerala converted modest incomes into high achievement in health and literacy.
Criticisms
The capability approach has been criticised for indeterminacy: Sen declines to specify a definitive list of capabilities, leaving selection and weighting to public reasoning, and Martha Nussbaum responded by proposing a list of central human capabilities. Measurement is demanding, since capabilities as opposed to achieved functionings are hard to observe. Marxist critics argue that the framework is methodologically individualist and insufficiently attentive to class, property and the structural dynamics of capitalism, naming deprivations without naming those who benefit. Economists in the growth tradition, notably in his public exchanges with Jagdish Bhagwati, contend that he underrates the poverty-reducing power of rapid growth. Others note that his optimism about democratic accountability sits uneasily with the persistence of chronic hunger and malnutrition in electorally vigorous India.
Legacy
Sen changed the vocabulary of development. Poverty as capability deprivation, famine as entitlement failure, the missing women, human development, development as freedom — each has become standard usage, and the last two are institutionalised in global measurement and in Indian rights-based legislation.
For the UPSC answer
Sen is your strongest resource for any question on poverty, deprivation, hunger or development, and he adds analytical range wherever a question would otherwise invite description. Define poverty as capability deprivation and immediately distinguish functionings from capabilities, since that distinction is what separates a good answer from a vague one. On famine or food security, state the entitlement argument crisply — food was available, access failed — and anchor it in Bengal 1943 before drawing the democratic accountability point. Use missing women and the household as cooperative conflict in gender questions, and cite the Kerala contrast for the argument that public action, not income alone, produces human development. Round off with a critical note, either the Marxist charge of individualism or Nussbaum's demand for a specified list, so the treatment is evaluative.
References & further reading
- Sen, A. (1981). Poverty and Famines: An Essay on Entitlement and Deprivation. Oxford: Clarendon Press.
- Sen, A. (1985). Commodities and Capabilities. Amsterdam: North-Holland.
- Sen, A. (1992). Inequality Reexamined. Oxford: Clarendon Press.
- Sen, A. (1999). Development as Freedom. New York: Alfred A. Knopf.
- Sen, A. (2009). The Idea of Justice. Cambridge, MA: Harvard University Press.
- Drèze, J. & Sen, A. (1989). Hunger and Public Action. Oxford: Clarendon Press.