The detection of unbiased abnormal returns in the classic event study depends on the validity of the assumption that the parameters of the return generating process remain constant throughout the sample period. However, given the substantial amount of evidence to support the fact that the market...

This study considers a single-period monopolistic insurance market with adverse selection and moral hazard. We find that, where the distortions introduced by moral hazard are sufficiently moderate, the insurer can use price-quantity contracts as a mechanism to simultaneously deal with both...

This paper considers whether lack of information regarding risk exposures can lead to a demand for negligence liability insurance. We find that, under the uniform negligence rule, any demand for liability insurance must come from informed individuals. The group whose privately optimal level of...

Standard models of adverse selection in insurance markets assume policyholders know their loss distributions. This study examines the nature of equilibrium and the equilibrium value of information in competitive insurance markets where consumers lack complete information regarding their loss...

Risk classification refers to the use of observable characteristics by insurers to group individuals with similar expected claims, to compute the corresponding premiums, and thereby to reduce asymmetric information. Permitting risk classification may reduce informational asymmetry-induced...

We study adverse selection using data from an 1808 Act of British Parliament that effectively opened a market for life annuities. Our analysis indicates significant selection effects. The evidence for adverse selection is strongest for a sub-sample of annuitants whose annuities were purchased by...

Risk classification refers to the use of observable characteristics by insurers to group individuals with similar expected claims, compute the corresponding premiums, and thereby reduce asymmetric information. With perfect risk classification, premiums fully reflect the expected cost associated...