Abstract

http://ssrn.com/abstract=1935912
 
 

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Product Design in Selection Markets


Andre Veiga


University of Oxford - Nuffield College

E. Glen Weyl


Microsoft Research New England; University of Chicago

November 4, 2015

Quarterly Journal of Economics, Forthcoming

Abstract:     
In selection markets, where the cost of serving consumers is heterogeneous and noncontractible, non-price product features allow a firm to sort profitable from unprofitable consumers. An example of this “sorting by quality” is the use of downpayments to dissuade borrowers unlikely to repay. We study a model in which consumers have multidimensional types and a firm offers a single product of endogenous quality, as in Spence (1975). These two ingredients generate a novel sorting incentive in a firm’s first-order condition for quality, which is a simple ratio. The denominator is marginal consumer surplus, a measure of market power. The numerator is the covariance, among marginal consumers, between marginal willingness to pay for quality and cost to the firm. We provide conditions under which this term is signed, and contrast the sorting incentives of a profit maximizer and a social planner. We then use this characterization to quantify the importance of sorting empirically in subprime auto lending, analytically sign its impact in a model of add-on pricing, and calibrate optimal competition policy in health insurance markets.

Number of Pages in PDF File: 42

Keywords: selection markets, cream-skimming, insurance markets, add-on pricing, subprime lending, product design

JEL Classification: D41, D42, D43, D86, G21, I13


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Date posted: September 30, 2011 ; Last revised: November 5, 2015

Suggested Citation

Veiga, Andre and Weyl, E. Glen, Product Design in Selection Markets (November 4, 2015). Quarterly Journal of Economics, Forthcoming. Available at SSRN: http://ssrn.com/abstract=1935912 or http://dx.doi.org/10.2139/ssrn.1935912

Contact Information

Andre Veiga
University of Oxford - Nuffield College ( email )
New Road
Oxford, OX1 1NF
United Kingdom
HOME PAGE: http://www.andreveiga.com
Eric Glen Weyl (Contact Author)
Microsoft Research New England ( email )
One Memorial Drive, 14th Floor
Cambridge, MA 02142
United States
(857) 998-4513 (Phone)
HOME PAGE: http://www.glenweyl.com
University of Chicago ( email )
1126 East 59th Street
Chicago, IL 60637
United States
(773) 702-4862 (Phone)
(773) 702-8490 (Fax)
HOME PAGE: http://www.glenweyl.com
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