HUMAN DEVELOPMENT INDEX (HDI)

PhD Theory Examination Answer — 10-12 Minute Format

DEFINITION (Write First - 1 min)

• UNDP, Human Development Report (HDR), 1990
• Operationalizes Amartya Sen's Capability Approach - development = expansion of human freedoms/capabilities, NOT GDP growth alone.

ORIGIN & HISTORY (1 min)

THREE DIMENSIONS & FOUR INDICATORS (2 min)

[DIAGRAM 1 - Draw this: Three-Pillar Flowchart]

  ┌────────────┐     ┌─────────────────────┐     ┌───────────────────┐
  │   HEALTH   │     │     EDUCATION       │     │ STANDARD OF LIVING│
  │            │     │                     │     │                   │
  │ Life        │     │ Mean Years of       │     │ GNI per capita    │
  │ Expectancy  │     │ Schooling (MYS)     │     │ (PPP, 2017 US$)   │
  │ at Birth    │     │ Expected Years of   │     │                   │
  │    (LE)     │     │ Schooling (EYS)     │     │                   │
  └─────┬───────┘     └──────────┬──────────┘     └────────┬──────────┘
        │                        │                          │
        ▼                        ▼                          ▼
      (LEI)                    (EI)                       (II)
        │                        │                          │
        └────────────────────────┴──────────────────────────┘
                                 │
                   HDI = (LEI × EI × II)^(1/3)

Goalposts Table:

FORMULA & CALCULATION (1.5 min)

• LEI = (LE - 20) / (85 - 20)
• EI = (MYSI + EYSI) / 2 where MYSI = MYS/15, EYSI = EYS/18
• II (Income) = [ln(GNI) - ln(100)] / [ln(75,000) - ln(100)] ← logarithmic (reflects diminishing marginal returns of income)

HDI CLASSIFICATION & GLOBAL RANKINGS (1 min)

[DIAGRAM 2 - Draw this: Horizontal Classification Bar]

|──────────────|──────────────|──────────────|──────────────|
    LOW HDI      MEDIUM HDI     HIGH HDI     VERY HIGH HDI
    < 0.550      0.550–0.699    0.700–0.799     ≥ 0.800

[DIAGRAM 3 - Pie Chart: 1/3 equal weight each dimension]

1. Iceland - 0.972
2. Norway - 0.970
3. Switzerland - 0.970

HDI VARIANTS/EXTENSIONS (2 min)

[DIAGRAM 4 - Family Tree / Index Hierarchy]

                      HDI (Core)
        ┌──────┬───────┼────────┬──────┐
       IHDI   GDI    GII     MPI    PHDI

LIMITATIONS (1.5 min)

• Narrow dimensions - ignores political freedom, security, governance, happiness (Stiglitz-Sen-Fitoussi Commission, 2009 identified 8 dimensions of well-being)
• Equal 1/3 weighting lacks empirical justification
• Measures functionings (outcomes), NOT capabilities (freedoms) - contradicts its own Sen-based theoretical foundation

• Arbitrary goalposts (not theoretically derived)
• Masks intra-country inequality (regional, caste, gender disparities)
• Data quality dependent on national statistical systems - weak in Low HDI countries

• Ravallion (2012) - "mashup index" combining incommensurable units; disaggregated indicators more useful
• Srinivasan (1994) - multicollinearity: GNI affects health and education outcomes
• Stiglitz-Sen-Fitoussi (2009) - GDP and HDI both insufficient; dashboard of 8+ dimensions needed

RECENT DEVELOPMENTS (1 min)

CONCLUDING SENTENCE (30 sec)

HDI remains the most widely cited composite development measure despite its limitations, primarily because it successfully operationalized the normative shift in development thinking from "How much does a country produce?" to "What can its people be and do?" - the enduring contribution of Mahbub ul-Haq's vision and Amartya Sen's intellectual framework.

KEY REFERENCES (Footnote in Exam)

1. UNDP (2025). HDR 2025: A Matter of Choice - People and Possibilities in the Age of AI
2. Mahbub ul-Haq (1995). Reflections on Human Development. Oxford University Press
3. Amartya Sen (1999). Development as Freedom. Oxford University Press
4. Ravallion, M. (2012). "Mashup Indices of Development." World Bank Research Observer, 27(1)
5. Stiglitz, Sen & Fitoussi (2009). Report of the Commission on Measurement of Economic Performance
6. Alkire & Foster (2011). "Counting and Multidimensional Poverty." Journal of Public Economics, 95(7-8)

EXAM TIME ALLOCATION (10-12 min)

• Open with Haq's quote - examiners love it, shows depth
• Draw all 4 diagrams (3-pillar flowchart, classification bar, pie chart, family tree) - visual answers score higher
• Always cite Ravallion's "mashup" critique - shows critical thinking expected at PhD level
• Mention the 2010 geometric mean reform and explain WHY - this is a favourite examiner question
• End by linking back to Sen's capability approach - demonstrates theoretical grounding