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98 Nw. U. L. Rev. 1373 (2003-2004)
Seduction by Plastic

handle is hein.journals/illlr98 and id is 1383 raw text is: Copyright 2004 by Northwestern  University, School of Law               Printed in U.S.A.
Northwestern  University Law  Review                                     Vol. 98, No. 4
SEDUCTION BY PLASTIC
Oren Bar-Gilr
I. INTRODUCTION
Consumer contracts are characterized by an asymmetry between the
two parties: the seller of a good or the provider of a service on the one hand
and the consumer on the other. One party is usually a highly sophisticated
corporation, the other-an individual, prone to the behavioral flaws that
make us human. Absent legal intervention, the sophisticated seller will of-
ten exploit the consumer's behavioral biases. The contract itself, com-
monly designed by the seller, will be shaped around consumers' systematic
deviations from perfect rationality. Such biased contracting is not the con-
sequence of imperfect competition. On the contrary, competitive forces
compel sellers to take advantage of consumers' weaknesses.
This broad theme is developed within a detailed case study of the
credit card market and the credit card contract. Credit cards present a sig-
nificant socio-economic phenomenon. In 2000, consumers used 1.44 bil-
lion credit cards, i.e., almost fourteen cards per household, to purchase an
estimated $1463 billion of goods and services. The average household
completed $14,000 of credit card transactions, about 33% of the median
household income.t Not only are credit cards important, they are also dan-
gerous. Credit card debt, which amounted to $683 billion in 2000, is a no-
The Society of Fellows, Harvard University, and John M. Olin Center for Law, Economics and
Business, Harvard Law School (bargill@law.harvard.edu; http://www.fas.harvard.edu/-bargill).
This Article greatly benefited from comments and suggestions by Yael Aridor Bar-Ilan, Jennifer
Arlen, lan Ayres, Omri Ben-Shahar, Susan Block-Lieb, Gabriella Blum, Jonathan Bolton, Marcus Cole,
Richard Craswell, Einer Elhauge, David Evans, Jesse Fried, Clayton Gillette, Ronald Gilson, Jeffery
Gordon, Alon Harel, Samuel Issacharoff, Christine Jolls, Louis Kaplow, Aron Katz, Avery Katz, Russell
Korobkin, Adriaan Lanni, Ronald Mann, Martha Minow, Edward Morrison, Gideon Parchomovski, Eric
Posner, Alan Schwartz, Peter Siegelman, Jing Tsu, Elizabeth Warren, and seminar and conference par-
ticipants at Berkeley, Chicago, Columbia, Fordham, Harvard, NYU, Penn, Stanford, Tel-Aviv, USC,
Virginia, Yale, and the 2004 annual meeting of the American Law and Economics Association. I am
especially grateful to Lucian A. Bebchuk for his invaluable advice and encouragement. For excellent
research assistance, I thank Efrat Assaf, Winnie Fung, Benjamin Roin, Lee Schindler, and James Sulli-
van. Finally, I thank the John M. Olin Center for Law, Economics, and Business at Harvard Law School
and the William F. Milton Fund of Harvard University for generous financial support.
I Bureau of the Census, STATISTICAL ABSTRACT OF THE UNITED STATES: 2002 § 25, tbls. 51, 652,
1165 (hereinafter STATISTICAL ABSTRACT).

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