The capability approach is a normative framework for assessing individual well‑being and social arrangements, emphasizing the real freedoms or opportunities people have to achieve the kinds of lives they value. It was pioneered in the late 20th century by economist and philosopher Amartya Sen and subsequently expanded by scholars such as Martha Nussbaum.
Overview
The approach shifts the focus of welfare analysis from traditional metrics such as income, utility, or resource ownership to the substantive freedoms individuals possess. These freedoms are termed “capabilities,” defined as the set of functionings (beings and doings) that a person can potentially attain. A capability is thus a real opportunity, whereas a functioning is the actual realization of a particular state (e.g., being well‑nourished, being literate, participating in community life).
Historical Development
- 1970s–1980s: Amartya Sen introduced the concept in a series of papers and lectures, critiquing the limitations of utilitarian and resource‑based welfare measures.
- 1990s: Sen’s book Development as Freedom (1999) popularized the approach in development economics and policy debates.
- 1990s–2000s: Martha Nussbaum formulated a list of central capabilities (e.g., life, bodily health, bodily integrity, senses, imagination, and thought) as a basis for a universal human development index.
Core Concepts
| Concept | Description |
|---|---|
| Functionings | Specific states of being or doing (e.g., being healthy, being educated). |
| Capabilities | The set of feasible functionings available to an individual; represents the freedom to choose among alternative functionings. |
| Conversion Factors | Personal, social, and environmental factors that affect the ability to convert resources into functionings (e.g., gender, disability, public infrastructure). |
| Agency | The capacity of individuals to pursue goals they value and to influence the social and political environment. |
| Well‑being | Measured in terms of the range and quality of capabilities rather than solely material consumption. |
Applications
- Human Development Index (HDI): Incorporates health, education, and standard of living indicators, reflecting capability‑based thinking.
- Poverty Measurement: Capability‑oriented metrics assess deprivation in dimensions such as health, education, and empowerment.
- Public Policy: Influences social security design, education reform, and health care planning by emphasizing equitable access to capabilities.
- International Development: Guides programs of the United Nations Development Programme (UNDP) and NGOs that target empowerment and freedom expansion.
Criticisms and Debates
- Operationalization: Critics argue that translating capabilities into measurable indicators can be methodologically challenging.
- Selection of Capabilities: Disagreement exists over which capabilities should be deemed central, with some viewing Nussbaum’s list as culturally specific.
- Comparative Evaluation: The approach’s emphasis on individual freedom raises questions about how to compare heterogeneous capability sets across populations.
Influence
The capability approach has become a foundational paradigm in welfare economics, development studies, political philosophy, and ethics, shaping academic discourse and informing policy frameworks worldwide.