Adverse selection and heterogeneity of demand responsiveness
This paper analyzes the distortions of (health) insurers' benefit levels due to adverse selection if individuals' responsiveness to differences in contracts is heterogeneous. Within a discrete choice model with two risk types and imperfect competition the following results are shown: In the pooling equilibrium, a positive correlation of low risk and high responsiveness (e.g., younger individuals being both healthier and faster to switch insurers than older individuals) increases the distortion of the uniform benefit level if the share of low risks is small; if the share of low risks is large, the reverse holds, but only if the average level of responsiveness is high. In the separating equilibrium, a positive correlation increases the distortion of the contract for the low risks, unless the number of insurers offering the contract for the high risks is very small or a large share of the high risks chooses the contract designated for the low risks. These results imply that the welfare effects of a policy intervention of making individuals more responsive crucially depend on which risk types' responsiveness is increased more. The results also have implications for the estimation of the level of risk aversion and of the welfare effects of adverse selection.
|Date of creation:||2014|
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- Hanming Fang & Michael P. Keane & Dan Silverman, 2008.
"Sources of Advantageous Selection: Evidence from the Medigap Insurance Market,"
Journal of Political Economy,
University of Chicago Press, vol. 116(2), pages 303-350, 04.
- Hanming Fang & Michael P. Keane & Dan Silverman, 2006. "Sources of Advantageous Selection: Evidence from the Medigap Insurance Market," NBER Working Papers 12289, National Bureau of Economic Research, Inc.
- Fang, Hanming & Keane, Michael & Silverman, Dan, 2006. "Sources of Advantageous Selection: Evidence from the Medigap Insurance Market," Working Papers 17, Yale University, Department of Economics.
- Liran Einav & Amy Finkelstein & Jonathan Levin, 2009.
"Beyond Testing: Empirical Models of Insurance Markets,"
NBER Working Papers
15241, National Bureau of Economic Research, Inc.
- Liran Einav & Amy Finkelstein & Jonathan Levin, 2010. "Beyond Testing: Empirical Models of Insurance Markets," Annual Review of Economics, Annual Reviews, vol. 2(1), pages 311-336, 09.
- Einav, Liran & Finkelstein, Amy & Levin, Jonathan, 2009. "Beyond Testing: Empirical Models of Insurance Markets," Department of Economics, Working Paper Series qt90g407hf, Department of Economics, Institute for Business and Economic Research, UC Berkeley.
- Johar, Meliyanni & Savage, Elizabeth, 2012. "Sources of advantageous selection: Evidence using actual health expenditure risk," Economics Letters, Elsevier, vol. 116(3), pages 579-582.
- M. Bundorf & Jonathan Levin & Neale Mahoney, 2008.
"Pricing and Welfare in Health Plan Choice,"
07-047, Stanford Institute for Economic Policy Research.
- Jack, William, 2006. "Optimal risk adjustment with adverse selection and spatial competition," Journal of Health Economics, Elsevier, vol. 25(5), pages 908-926, September.
- Michiel Bijlsma & Gijsbert Zwart & Jan Boone, 2011.
"Competition leverage: How the demand side affects optimal risk adjustment,"
CPB Discussion Paper
181, CPB Netherlands Bureau for Economic Policy Analysis.
- Michiel Bijlsma & Jan Boone & Gijsbert Zwart, 2014. "Competition leverage: how the demand side affects optimal risk adjustment," RAND Journal of Economics, RAND Corporation, vol. 45(4), pages 792-815, December.
- Bijlsma, Michiel & Boone, Jan & Zwart, Gijsbert, 2011. "Competition leverage: how the demand side affects optimal risk adjustment," CEPR Discussion Papers 8461, C.E.P.R. Discussion Papers.
- Bijlsma, M. & Boone, J. & Zwart, G., 2011. "Competition Leverage : How the Demand Side Affects Optimal Risk Adjustment," Discussion Paper 2011-071, Tilburg University, Center for Economic Research.
- Keith Marzilli Ericson & Amanda Starc, 2012. "Heuristics and Heterogeneity in Health Insurance Exchanges: Evidence from the Massachusetts Connector," American Economic Review, American Economic Association, vol. 102(3), pages 493-497, May.
- Normann Lorenz, 2013. "Adverse selection and risk adjustment under imperfect competition," Research Papers in Economics 2013-05, University of Trier, Department of Economics.
- Kenneth Train, 2003.
"Discrete Choice Methods with Simulation,"
Online economics textbooks,
SUNY-Oswego, Department of Economics, number emetr2.
- Alma Cohen & Peter Siegelman, 2010.
"Testing for Adverse Selection in Insurance Markets,"
Journal of Risk & Insurance,
The American Risk and Insurance Association, vol. 77(1), pages 39-84.
- Alma Cohen & Peter Siegelman, 2009. "Testing for Adverse Selection in Insurance Markets," NBER Working Papers 15586, National Bureau of Economic Research, Inc.
- Anne Beeson Royalty & Neil Solomon, 1999. "Health Plan Choice: Price Elasticities in a Managed Competition Setting," Journal of Human Resources, University of Wisconsin Press, vol. 34(1), pages 1-41.
- Sinaiko, Anna D. & Hirth, Richard A., 2011. "Consumers, health insurance and dominated choices," Journal of Health Economics, Elsevier, vol. 30(2), pages 450-457, March.
- Olivella, Pau & Vera-Hernandez, Marcos, 2007. "Competition among differentiated health plans under adverse selection," Journal of Health Economics, Elsevier, vol. 26(2), pages 233-250, March.
- Liran Einav & Amy Finkelstein & Mark R. Cullen, 2010. "Estimating Welfare in Insurance Markets Using Variation in Prices," The Quarterly Journal of Economics, Oxford University Press, vol. 125(3), pages 877-921.
- Harris, Katherine & Schultz, Jennifer & Feldman, Roger, 2002. "Measuring consumer perceptions of quality differences among competing health benefit plans," Journal of Health Economics, Elsevier, vol. 21(1), pages 1-17, January.
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