Explain how the Multidimensional Poverty Index (MPI) is used to measure poverty in a country.
Answers may include:
Definition
- Multidimensional Poverty Index (MPI): A composite measure that assesses multiple deprivations at the household level in three dimensions—health, education, and standard of living—and combines them into a single index.
- Poverty: A state in which individuals lack the financial resources and basic capabilities to maintain a minimal standard of living.
Explanation/Economic Theory
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Purpose of the MPI
- Extends beyond income-focused measures to incorporate a range of deprivations that individuals or households face.
- Highlights the multifaceted nature of poverty, addressing health, education, and standard of living in combination.
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Dimensions and Indicators
- Health Dimension: May include indicators such as nutrition and child mortality.
- Education Dimension: Often measured through years of schooling and current school attendance.
- Standard of Living Dimension: Common indicators include access to electricity, sanitation, safe drinking water, type of flooring, cooking fuel, and ownership of basic assets.
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Weighting System
- Each dimension is assigned equal weight (for instance, health, education, and standard of living might each account for one-third of the overall measure).
- Specific indicators within each dimension carry sub-weights, ensuring a balanced approach to capturing multiple aspects of deprivation.
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Identifying Multidimensionally Poor Households
- A household is considered multidimensionally poor if it is deprived in a certain combination of weighted indicators (commonly at least one-third of the total).
- This threshold-based identification reveals both how many people are deprived and the intensity of their deprivations.
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Calculation of the MPI
- Involves two core components:
- Incidence (H): The proportion of the population identified as multidimensionally poor.
- Intensity (A): The average proportion of indicators in which poor households are deprived.
- The index is obtained by multiplying H and A, ensuring both the breadth and depth of poverty are captured in a single figure.
- Involves two core components:
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Use in Policy and Comparison
- Policymakers analyze MPI results to identify the most urgent deprivations and prioritize interventions (for example, improving health services or education access).
- The index enables comparison across regions and over time, helping governments and international organizations track progress in reducing poverty levels.
Diagrams
- No diagrams are required.
Using real-world examples, discuss the view that the best method to achieve greater equity in the distribution of income in an economy is to use a progressive tax system.
Answers may include:
Definition
- Equity in income distribution: Fairness in how income and wealth are shared within an economy, often measured using tools such as the Gini coefficient or Lorenz curve.
- Progressive tax system: A taxation structure where individuals with higher incomes pay a higher proportion of their income in tax compared to those with lower incomes.
Explanation/Economic theory
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Income inequality and its causes
- Market-based income distribution can lead to disparities, as those with higher-skilled labor or capital earn more.
- Without intervention, the gap between high- and low-income groups may widen, creating inefficiencies and social issues such as reduced social mobility.
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Role of progressive taxes
- In a progressive system, higher earners pay disproportionately more.
- This helps reduce post-tax income inequality by compressing disposable income differences.
- Increased tax revenue can be allocated to social programs (e.g., education, healthcare, welfare payments) benefiting lower-income groups.
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Redistributive effect
- Shifting part of higher incomes to fund public goods or transfer payments can improve equity, as it raises the standard of living for lower-income households.
- Helps address market failures associated with unequal opportunities (e.g., lack of access to quality education).
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Possible drawbacks
- High marginal tax rates may discourage work, savings, and investment among top earners.
- Potential for tax evasion or capital flight if rates are seen as excessive.
- Administrative complexities and costs associated with monitoring and enforcing higher rates on high earners.
Diagram
- Shift in Lorenz Curve to be closer to the line of perfect equality.
Evaluation
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Short-run vs. long-run impacts
- In the short run, progressive taxes can reduce disposable income for high earners while boosting government revenue to fund social programs.
- Over the long run, there could be reduced incentives to work or invest if top rates are too high, potentially limiting economic growth and overall tax revenue.
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Real-world examples
- Nordic countries (e.g., Sweden, Denmark)
- Have top marginal income tax rates often above 50%.
- Exhibit some of the lowest Gini coefficients globally (e.g., around 0.27 for Sweden), reflecting relatively high equity.
- Significant government revenue is invested in universal healthcare, education, and extensive welfare benefits.
- United States
- Operates a progressive federal income tax system but has a higher Gini coefficient (approximately 0.41).
- Despite progressive rates, various deductions and lower top rates compared to Nordic countries can result in less pronounced redistribution.
Conclusion - Progressive taxes can be highly effective if accompanied by well-targeted government spending.
- Other policies (e.g., transfer payments, subsidies) may be necessary to address any disincentives to work and to cover gaps not fully addressed by taxation alone.
- Other methods to reduce inequality
- Transfer payments (unemployment benefits, social security).
- Minimum wage legislation and subsidies targeting low-income groups.
- These can complement a progressive tax system or serve as alternative approaches.
- Other methods to reduce inequality
- The most suitable policy mix can depend on a country’s economic conditions, cultural context, and political climate.
- Nordic countries (e.g., Sweden, Denmark)