Optimal ex post risk adjustment in markets with adverse selection
نویسندگان
چکیده
منابع مشابه
Optimal Risk Adjustment in Markets with Adverse Selection: An Application to Managed Care
It is well known that adverse selection causes distortions in contracts in markets with asymmetric information. Taxing inefficient contracts and subsidizing the efficient ones can improve market outcomes (Bruce C. Greenwald and Joseph E. Stiglitz, 1986), although regulators rarely seem to implement tax and subsidy schemes with adverse-selection motives in mind. Contracts are often complex and "...
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Existence of pure strategy equilibria is studied in health insurance markets that exhibit both ex ante adverse selection of the Rothschild–Stiglitz–Wilson type, and ex post hidden information moral hazard. It is found that ex post moral hazard has two offsetting effects on the existence of equilibrium, and that in general it is difficult to say whether an equilibrium is more or less likely to e...
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Paying insurers risk-adjusted prices for covering different individuals can correct selection incentives and induce the market to provide optimal insurance policies. To calculate the optimal risk-adjusted prices we need to know (a) what the optimal policies are; (b) how much they cost; and (c) how competitive the market is. We examine these issues in a model with spatial heterogeneity and adver...
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1 Akerlof (1970) shows how asymmetric information can create adverse selection and undermine market efficiency. Economic and legal institutions, such as auditors, underwriters, accountants, or used-car dealers, often emerge to limit adverse selection and allow markets to function. As a result, direct government interventions are usually unnecessary. If a market does collapse, however—presumably...
متن کاملMatching markets with adverse selection
This paper considers a market with adverse selection in the spirit of Rothschild and Stiglitz (Quart. J. Econ. 90 (1976) 629). The major departure from existing approaches is that we model a decentralized market that is open-ended and constantly refilled by new participants, e.g., by new workers and firms in the case of a labor market. The major novelty of this approach is that the distribution...
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ژورنال
عنوان ژورنال: Journal of Mathematical Economics
سال: 2019
ISSN: 0304-4068
DOI: 10.1016/j.jmateco.2019.09.003