Versioning and Quality Distortion in Software? Evidence from E-Commerce Panel Data
We present a framework for measuring software quality using pricing and demand data, and empirical estimates that quantify the extent of quality degradation associated with software ver- sioning. Using a 7-month, 108-product panel of software sales from Amazon.com, we document the extent to which quality varies across di¤erent software versions, estimating quality degradation that ranges from as little as 8% to as much as 56% below that of the corresponding ?agship ver- sion. Consistent with prescriptions from the theory of vertical di¤erentiation, we also ?nd that an increase in the total number of versions is associated with an increase in the di¤erence in quality between the highest and lowest quality versions, and a decrease in the quality di¤erence between "neighboring" versions. We compare our estimates with those derived from two sets of subjective measures of quality, based on CNET editorial ratings and Amazon.com user reviews, and discuss competing interpretations of the signi?cant di¤erences that emerge from this comparison. As the ?rst empirical study of software versioning that is based on both subjective and econometrically estimated measures of quality, this paper provides a framework for testing a wide variety of results in IS that are based on related models of vertical di¤erentiation, and its ?ndings have important implications for studies that treat web-based user ratings as cardinal data.
Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:
- Erik Brynjolfsson & Yu (Jeffrey) Hu & Michael D. Smith, 2003.
"Consumer Surplus in the Digital Economy: Estimating the Value of Increased Product Variety at Online Booksellers,"
INFORMS, vol. 49(11), pages 1580-1596, November.
- Brynjolfsson, Erik & Smith, Michael D. & Yu, (Jeffrey) Hu, 2003. "Consumer Surplus in the Digital Economy: Estimating the Value of Increased Product Variety at Online Booksellers," Working papers 4305-03, Massachusetts Institute of Technology (MIT), Sloan School of Management.
- Judith Chevalier & Austan Goolsbee, 2003. "Measuring Prices and Price Competition Online: Amazon.com and BarnesandNoble.com," Quantitative Marketing and Economics (QME), Springer, vol. 1(2), pages 203-222, June.
- Boom, Anette, 2004. ""Download for Free" - When Do Providers of Digital Goods Offer Free Samples?," Discussion Paper Series of SFB/TR 15 Governance and the Efficiency of Economic Systems 70, Free University of Berlin, Humboldt University of Berlin, University of Bonn, University of Mannheim, University of Munich.
- Boom, Anette, 2004. ""Download for Free": When do providers of digital goods offer free samples?," Discussion Papers 2004/28, Free University Berlin, School of Business & Economics.
- Arun Sundararajan, 2003. "Managing Digital Piracy: Pricing, Protection and Welfare," Law and Economics 0307001, EconWPA.
- Ramnath K. Chellappa & Shivendu Shivendu, 2005. "Managing Piracy: Pricing and Sampling Strategies for Digital Experience Goods in Vertically Segmented Markets," Information Systems Research, INFORMS, vol. 16(4), pages 400-417, December.
- Eugenio J. Miravete, 2002. "Estimating Demand for Local Telephone Service with Asymmetric Information and Optional Calling Plans," Review of Economic Studies, Oxford University Press, vol. 69(4), pages 943-971.
- Miravete, Eugenio J, 2000. "Estimating Demand for Local Telephone Service with Asymmetric Information and Optional Calling Plans," CEPR Discussion Papers 2635, C.E.P.R. Discussion Papers.
- Raymond J. Deneckere & R. Preston McAfee, 1996. "Damaged Goods," Journal of Economics & Management Strategy, Wiley Blackwell, vol. 5(2), pages 149-174, 06.
- Deneckere, R. & McAfee, R.P., 1995. "Damaged Goods," Working papers 9508, Wisconsin Madison - Social Systems.
- Kwoka, John E, Jr, 1992. "Market Segmentation by Price-Quality Schedules: Some Evidence from Automobiles," The Journal of Business, University of Chicago Press, vol. 65(4), pages 615-628, October.
- Mussa, Michael & Rosen, Sherwin, 1978. "Monopoly and product quality," Journal of Economic Theory, Elsevier, vol. 18(2), pages 301-317, August.
- Borenstein, Severin & Rose, Nancy L, 1994. "Competition and Price Dispersion in the U.S. Airline Industry," Journal of Political Economy, University of Chicago Press, vol. 102(4), pages 653-683, August.
- Severin Borenstein & Nancy L. Rose, 1991. "Competition and Price Dispersion in the U.S. Airline Industry," NBER Working Papers 3785, National Bureau of Economic Research, Inc.
- Crawford, Gregory S & Shum, Matthew, 2007. "Monopoly Quality Degradation and Regulation in Cable Television," Journal of Law and Economics, University of Chicago Press, vol. 50(1), pages 181-219, February.
- Anindya Ghose & Vidyanand Choudhary & Tridas Mukhopadhyay & Uday Rajan, 2002. "Personalized Pricing and Quality Differentiation on the Internet," Review of Marketing Science Working Papers 2-1-1005, Berkeley Electronic Press. Full references (including those not matched with items on IDEAS)
When requesting a correction, please mention this item's handle: RePEc:net:wpaper:0514. See general information about how to correct material in RePEc.
For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (Nicholas Economides)
If references are entirely missing, you can add them using this form.