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ocecnlqz-0210 |
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xevyo |
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| model_name |
Longevity inequality |
| model_desc |
Longevity inequality |
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This PDF is a scholarly economic research paper fr This PDF is a scholarly economic research paper from the Journal of Economic Theory that investigates how differences in human longevity create inequality in both economic outcomes and personal welfare. The paper develops a dynamic theoretical model in which individuals face uncertain lifespans and make decisions about savings, consumption, and labor supply. It then studies how heterogeneity in mortality risk—driven by socioeconomic factors—leads to persistent and widening inequality.
The paper’s central message is that when people with lower income or education face higher mortality rates, society becomes trapped in a feedback loop where shorter lives reinforce economic disadvantage, while longer lives amplify the benefits enjoyed by higher socioeconomic groups.
🔶 1. Purpose of the Study
The paper aims to:
Understand how differences in life expectancy across social or income groups emerge
Examine how individuals make optimal decisions when lifespan is uncertain
Show how longevity inequality itself generates income, asset, and welfare inequality
Explore how policy can mitigate disparities in longevity and improve overall welfare
The study positions longevity inequality as a central dimension of economic inequality, not merely a health issue.
🔶 2. Conceptual Foundations: Longevity as a Source of Inequality
The paper highlights several foundational facts:
Mortality risks differ widely across populations because of genetics, socioeconomic status, and environmental conditions
Higher-income groups generally live longer due to better access to:
healthcare
healthier environments
nutrition
education
Longevity-inequality
As a result:
Wealthier individuals accumulate more lifetime earnings
Poorer individuals have shorter time horizons, leading to lower savings and less wealth
These dynamics generate a self-reinforcing inequality cycle
🔶 3. The Model: Lifetime Decisions Under Uncertain Survival
The study introduces a dynamic stochastic life-cycle model in which individuals:
face age-dependent mortality risk
choose consumption
choose savings
decide how much to invest in health
Longevity-inequality
A key insight:
👉 People with higher mortality risk rationally choose to save less and consume earlier, reinforcing long-term economic disparities.
🔶 4. Core Findings
✔ A) Longevity inequality increases economic inequality
Shorter-lived individuals:
accumulate less wealth
save less over their lifetime
have lower lifetime labor income
cannot benefit as much from compound wealth growth
Longer-lived individuals:
save more
accumulate more assets
benefit more from interest and investment growth
Over time, small differences in longevity compound into large economic differences.
Longevity-inequality
✔ B) Unequal mortality creates unequal welfare
The paper argues that welfare inequality across population groups is greater than income inequality, because:
living longer inherently provides more opportunities
dying earlier dramatically reduces lifetime utility
Longevity-inequality
✔ C) Longevity inequality is self-reinforcing
The model shows a feedback mechanism:
Low socioeconomic status → higher mortality
Higher mortality → lower savings, lower wealth
Lower wealth → lower ability to invest in health
Lower health → higher mortality
Thus, individuals become trapped in a longevity-poverty cycle.
Longevity-inequality
✔ D) Health investment matters
The paper demonstrates that health investments:
reduce mortality
increase life expectancy
strongly increase lifetime welfare
create divergence when some groups can invest more than others
Longevity-inequality
🔶 5. Policy Implications
The authors propose several policy directions:
✔ Improving health access reduces inequality
Policies that reduce mortality among disadvantaged groups—such as public health investment or healthcare expansion—significantly reduce both longevity and economic inequality.
✔ Social insurance is critical
Social security and pension systems must incorporate mortality differences to avoid disadvantaging groups who live shorter lives.
✔ Redistribution may be necessary
Tax and transfer policies can offset the unequal economic impacts of unequal lifespans.
✔ Reducing environmental inequality reduces lifespan gaps
Environmental improvements can reduce mortality disparities.
Longevity-inequality
🔶 6. Broader Impact of the Paper
This study reframes the debate around:
inequality
social welfare
health disparities
demographic transitions
by showing that longevity is not just an outcome of inequality but also a powerful cause of it.
It provides a rigorous mathematical foundation for understanding real-world patterns in:
rich vs. poor life expectancies
racial mortality gaps
intergenerational inequality
policy evaluation
⭐ Perfect One-Sentence Summary
This paper shows that differences in life expectancy across socioeconomic groups create and perpetuate deep economic and welfare inequalities, forming a self-reinforcing cycle where shorter lives lead to lower wealth and opportunity, while longer lives amplify advantage.... |
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