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Demography

, Volume 55, Issue 5, pp 1829–1854 | Cite as

Individual Uncertainty About Longevity

  • Brigitte Dormont
  • Anne-Laure Samson
  • Marc Fleurbaey
  • Stéphane Luchini
  • Erik Schokkaert
Article

Abstract

This article presents an assessment of individual uncertainty about longevity. A survey performed on 3,331 French people enables us to record several survival probabilities per individual. On this basis, we compute subjective life expectancies (SLE) and subjective uncertainty regarding longevity (SUL), the standard deviation of each individual’s subjective distribution of her or his own longevity. It is large and equal to more than 10 years for men and women. Its magnitude is comparable to the variability of longevity observed in life tables for individuals under 60, but it is smaller for those older than 60, which suggests use of private information by older respondents. Our econometric analysis confirms that individuals use private information—mainly their parents’ survival and longevity—to adjust their level of uncertainty. Finally, we find that SUL has a sizable impact, in addition to SLE, on risky behaviors: more uncertainty on longevity significantly decreases the probability of unhealthy lifestyles. Given that individual uncertainty about longevity affects prevention behavior, retirement decisions, and demand for long-term care insurance, these results have important implications for public policy concerning health care and retirement.

Keywords

Subjective expectations Uncertainty Longevity Prevention decisions Retirement decisions 

Notes

Acknowledgments

We are grateful to the four referees for their constructive suggestions. We would also like to thank for useful discussions Alain Trannoy, Frangois-Charles Wolff, Nicolas Jacquemet, Eric Bonsang, Emmanuel Thibault, and Pierre Pestieau; and participants at the Journee de la Chaire Sante (Paris, 2012), the Second Workshop TSE/IDEI on Long Term Care (Toulouse, 2012), the Seminar on Health Economics and Policy (Grindelwald, 2014), and the Workshop on Subjective Expectations and Probabilities in Economics and Psychology (Essex, 2014). We also thank France Mesle for information on life tables. We acknowledge financial support from the Health Chair–PSL, Universite Paris Dauphine, ENSAE and MGEN under the aegis of the Fondation du Risque.

Supplementary material

13524_2018_713_MOESM1_ESM.pdf (371 kb)
ESM 1 (PDF 370 kb)

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Copyright information

© Population Association of America 2018

Authors and Affiliations

  • Brigitte Dormont
    • 1
  • Anne-Laure Samson
    • 1
  • Marc Fleurbaey
    • 2
  • Stéphane Luchini
    • 3
  • Erik Schokkaert
    • 4
    • 5
  1. 1.Université Paris-Dauphine, PSL University, LEDa, Place du Maréchal de Lattre de TassignyParis Cedex 16France
  2. 2.Woodrow Wilson SchoolPrinceton UniversityPrincetonUSA
  3. 3.Aix-Marseille University (Aix-Marseille School of Economics)CNRS & EHESS, GREQAM, Centre de la Vieille CharitéMarseilleFrance
  4. 4.Department of EconomicsKU LeuvenLeuvenBelgium
  5. 5.CORE, Université Catholique de LouvainLouvain-la-NeuveBelgium

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