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On the Limits of Chronological Age

Author

Listed:
  • Kotschy, Rainer

    (Harvard School of Public Health)

  • Bloom, David E.

    (Harvard School of Public Health)

  • Scott, Andrew

    (London Business School)

Abstract

Analysis of population aging is typically framed in terms of chronological age. However, chronological age itself is not necessarily deeply informative about the aging process. This paper reviews literature and conducts empirical analyses aimed at investigating whether chronological age is a reliable proxy for physiological functioning when used in models of economic behavior and outcomes. We show that chronological age is an unreliable proxy for physiological functioning due to appreciable differences in how aging unfolds across people, health domains, and over time. We further demonstrate that chronological age either fails to predict economic variables when used in lieu of physiological functioning, or that it predicts additional effects on economic behavior and outcomes that are largely unrelated to physiological aging. Continued reliance on chronological age as a proxy for physiological functioning might impede the ability of societies to fully harness the benefits of increasing longevity.

Suggested Citation

  • Kotschy, Rainer & Bloom, David E. & Scott, Andrew, 2024. "On the Limits of Chronological Age," IZA Discussion Papers 17427, Institute of Labor Economics (IZA).
    • Handle: RePEc:iza:izadps:dp17427
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    References listed on IDEAS

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    More about this item

    Keywords

    population aging; chronological aging; physiological aging; physiological functioning; longevity;
    All these keywords.

    JEL classification:

    • I10 - Health, Education, and Welfare - - Health - - - General
    • I30 - Health, Education, and Welfare - - Welfare, Well-Being, and Poverty - - - General
    • J10 - Labor and Demographic Economics - - Demographic Economics - - - General

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