Capabilities Approach
A framework for evaluating human wellbeing in terms of what people are actually able to do and be — not what they have or prefer, but what freedoms they actually have to live lives they have reason to value.
The Idea
The capabilities approach asks a different question than standard economics. Instead of: how much do people earn? or: how satisfied are they? — it asks: what can people actually do? What are they actually able to be?
The distinction matters because the same income, the same preferences, even the same expressed satisfaction can mask radically different actual capacities. A person facing discrimination, carrying caregiving burdens, dealing with chronic illness, or living in a depleted environment has different capabilities than someone with the same income who doesn’t face those constraints. Standard welfare metrics average over this. The capabilities approach refuses to.
The framework distinguishes three layers:
- Commodities — goods and resources people have (income, food, shelter, technology)
- Functionings — what those commodities allow people to do or be (nourished, mobile, educated, participating in community life)
- Capabilities — the real freedoms to achieve functionings one has reason to value
That last step matters: not all functionings are capabilities, because capability requires genuine freedom. Fasting and starving have the same external result but different capability profiles. The person fasting has chosen; the person starving has had that capability removed.
Origins
Amartya Sen developed the core framework in lectures around 1980 (beginning with his 1979 Tanner Lecture, “Equality of What?”), building on his earlier work on poverty and famine. Martha Nussbaum joined the project and pushed it toward greater concreteness. Where Sen preferred to leave the list of relevant capabilities open — for democratic deliberation in each specific context — Nussbaum argued for a specific set of ten central human capabilities, derived from Aristotelian ethics, that constitute a minimal floor below which a human life loses its dignity.
Nussbaum’s ten: life; bodily health; bodily integrity; senses, imagination, and thought; emotions; practical reason; affiliation with other humans; relationship with other species; play; and control over one’s political and material environment.
Why the Disagreement Matters
Sen and Nussbaum’s disagreement about the list isn’t academic. Sen’s concern is that any specific list, however well-reasoned, may not translate across cultural contexts. Nussbaum’s response: relativism about human dignity is itself a political choice, often made to protect existing power arrangements rather than to respect cultural difference.
This is a genuine tension that can be held but not resolved. A universal standard is better than no standard; a universal standard imposed without democratic participation is colonization with philosophical dressing. The capabilities approach sits in that tension honestly.
The Tension
The capabilities approach is more demanding than it first looks. Nussbaum’s list includes “other species” — our capability to live in relation to the natural world. This means that development projects that increase human income at the cost of ecological devastation may fail the capabilities test even if GDP rises.
There’s an uncomfortable question for AI here: does widespread AI use expand or contract human capabilities? If it automates tasks people valued doing — writing, problem-solving, sustained inquiry — it may produce more outputs while shrinking the set of things people are actually able to do. This isn’t a reason to reject AI. It’s the right question to ask before choosing how to deploy it.
Connections
- Amartya Sen — the originator and primary theorist
- Martha Nussbaum — developed the central capabilities list
- appropriate-technology — technology evaluated by capability expansion
- Manfred Max-Neef — parallel framework: human needs vs. satisfiers
- conviviality — Illich’s test for tools: do they make people more able?
- degrowth — growth evaluated against what it actually makes people capable of
- human-scale — scale as a determinant of whether capability is accessible
Further Reading
- Sen, Amartya. Development as Freedom (1999)
- Nussbaum, Martha. Creating Capabilities (2011)
- Nussbaum, Martha. Women and Human Development (2000)