The Relationship between Firm Size and Screening in an Automobile Insurance Market

This article modifies the Carlson and McAfee model of price dispersion to allow for screening. It is argued that only large insurers will be able to screen effectively and that they should insure fewer high-risk drivers and have lower loss costs as a result. We examine the relationship between firm...

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Bibliographic Details
Published in:The Journal of risk and insurance 1995-03, Vol.62 (1), p.12-29
Main Authors: Kroner, Kenneth F., West, Douglas S.
Format: Article
Language:English
Subjects:
Automobile insurance
Automobiles
Cost estimates
Financial risk
Insurance
Insurance expenses
Insurance industry
Insurance markets
Insurance premiums
Insurance providers
Insurance regulation
Mathematical models
Pricing policies
Risk management
Size of enterprise
Studies
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Summary:This article modifies the Carlson and McAfee model of price dispersion to allow for screening. It is argued that only large insurers will be able to screen effectively and that they should insure fewer high-risk drivers and have lower loss costs as a result. We examine the relationship between firm size and loss costs using automobile insurance data for Alberta for the years 1978 through 1981. The relationship between cars insured per firm and loss costs per car insured is significant and is represented by a parabola, as expected, for four out of the five largest driver classes in Alberta.
ISSN:0022-4367
1539-6975
DOI:10.2307/253690