When is a coinsurance-type insurance policy inferior or even giffen?

Arthur HAU

Research output: Journal PublicationsJournal Article (refereed)peer-review

10 Citations (Scopus)

Abstract

This article derives the necessary and sufficient conditions for a coinsurance-type insurance policy covering a particular risk to be inferior and to be Giffen. Mossin's decreasing absolute risk aversion assumption for insurance to be inferior is avoided. The result generalizes Hoy and Robson and Briys, Dionne, and Eeckhoudt's results to the case with a continuum of states and relaxes their assumption of constant relative risk aversion. It is shown that knowledge about the distribution of risk can be used to relax assumptions on an utility function for a coinsurance-type insurance policy to be inferior and to be Giffen.
Original languageEnglish
Pages (from-to)343-364
Number of pages22
JournalJournal of Risk and Insurance
Volume75
Issue number2
Early online date5 May 2008
DOIs
Publication statusPublished - Jun 2008

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