<p>Recent assessments of global welfare inequality utilise measures that combine country-level outcomes in consumption and life expectancy (or average lifespan). However, this perspective remains blind to the fact that two countries may have the same life expectancy but very different underlying distributions of lifespan. In this paper, I examine global welfare inequality over the last five decades using a preference-based measure, the equivalent consumption, which accounts for these within-country differences. I find that the evolution of inequality over time is very sensitive to the underlying normative choices within the measure. More specifically, downward trends in global welfare inequality are reversed when greater priority is given to to those with the shortest lifespans.</p>

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Global lifespan and welfare inequality over the last five decades from a prioritarian perspective

  • Shaun Da Costa

摘要

Recent assessments of global welfare inequality utilise measures that combine country-level outcomes in consumption and life expectancy (or average lifespan). However, this perspective remains blind to the fact that two countries may have the same life expectancy but very different underlying distributions of lifespan. In this paper, I examine global welfare inequality over the last five decades using a preference-based measure, the equivalent consumption, which accounts for these within-country differences. I find that the evolution of inequality over time is very sensitive to the underlying normative choices within the measure. More specifically, downward trends in global welfare inequality are reversed when greater priority is given to to those with the shortest lifespans.