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Moral hazard and selection among the poor: Evidence from a randomized experiment

  • Spenkuch, Jörg L.

Not only does economic theory predict high-risk individuals to be more likely to purchase insurance, but insurance coverage is also thought to crowd out precautionary activities. In spite of stark theoretical predictions, there is conflicting empirical evidence on adverse selection, and evidence on ex ante moral hazard is very scarce. Using data from the Seguro Popular Experiment in Mexico, this paper documents patterns of selection on observables into health insurance as well as the existence of non-negligible ex ante moral hazard. More specifically, the findings indicate that (i) agents in poor self-assessed health prior to the intervention have, all else equal, a higher propensity to take up insurance; and (ii) insurance coverage reduces the demand for self-protection in the form of preventive care. Curiously, however, individuals do not sort based on objective measures of their health.

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Article provided by Elsevier in its journal Journal of Health Economics.

Volume (Year): 31 (2012)
Issue (Month): 1 ()
Pages: 72-85

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Handle: RePEc:eee:jhecon:v:31:y:2012:i:1:p:72-85
Contact details of provider: Web page: http://www.elsevier.com/locate/inca/505560

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  1. Amy Finkelstein & James Poterba, 2004. "Adverse Selection in Insurance Markets: Policyholder Evidence from the U.K. Annuity Market," Journal of Political Economy, University of Chicago Press, vol. 112(1), pages 183-208, February.
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  6. John Cawley & Tomas Philipson, 1996. "An Empirical Examination of Information Barriers to Trade in Insurance," NBER Working Papers 5669, National Bureau of Economic Research, Inc.
  7. Pierre‐André Chiappori & Bruno Jullien & Bernard Salanié & François Salanié, 2006. "Asymmetric information in insurance: general testable implications," RAND Journal of Economics, RAND Corporation, vol. 37(4), pages 783-798, December.
  8. Joshua D. Angrist & Guido W. Imbens, 1995. "Identification and Estimation of Local Average Treatment Effects," NBER Technical Working Papers 0118, National Bureau of Economic Research, Inc.
  9. Ai, Chunrong & Norton, Edward C., 2003. "Interaction terms in logit and probit models," Economics Letters, Elsevier, vol. 80(1), pages 123-129, July.
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  11. Zweifel, Peter & Manning, Willard G., 2000. "Moral hazard and consumer incentives in health care," Handbook of Health Economics, in: A. J. Culyer & J. P. Newhouse (ed.), Handbook of Health Economics, edition 1, volume 1, chapter 8, pages 409-459 Elsevier.
  12. David M. Cutler & Richard J. Zeckhauser, 1999. "The Anatomy of Health Insurance," NBER Working Papers 7176, National Bureau of Economic Research, Inc.
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  18. repec:dgr:kubcen:200877 is not listed on IDEAS
  19. David Card & Carlos Dobkin & Nicole Maestas, 2008. "The Impact of Nearly Universal Insurance Coverage on Health Care Utilization: Evidence from Medicare," American Economic Review, American Economic Association, vol. 98(5), pages 2242-58, December.
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  23. Sosa-Rubí, Sandra G. & Galárraga, Omar & Harris, Jeffrey E., 2009. "Heterogeneous impact of the "Seguro Popular" program on the utilization of obstetrical services in Mexico, 2001-2006: A multinomial probit model with a discrete endogenous variable," Journal of Health Economics, Elsevier, vol. 28(1), pages 20-34, January.
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