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114 Yale L.J. 1613 (2004-2005)
To Insure Prejudice: Racial Disparities in Taxicab Tipping

handle is hein.journals/ylr114 and id is 1631 raw text is: Essay
To Insure Prejudice: Racial Disparities in
Taxicab Tipping
Ian Ayres,t Fredrick E. Vars,tt and Nasser Zakariyat
CONTENTS
INTRODUCTION........................................................................................ 1615
I. RACE AND THE HISTORY OF TIPPING ............................................... 1619
II. DESCRIPTION OF DATA ..................................................................... 1623
III. RESULTS ........................................................................................... 1626
A. Lower Tips for Minority Drivers................................................ 1627
B. Lower Tips by Minority Passengers .......................................... 1628
C. Driver and Passenger Racial Intersections ............................... 1629
t William K. Townsend Professor of Law, Yale Law School. Please send comments to
ian.ayres@yale.edu. This Essay is dedicated to Underhill Moore and Suzanne Perry. Moore took
to the streets of New Haven during the 1930s to see whether people observed traffic and parking
meter regulations. Underhill Moore & Charles C. Callahan, Law and Learning Theory: A Study in
Legal Control, 53 YALE L.J. 1 (1943). Nearly seventy years later, Perry conducted a pilot study of
taxi and pizza delivery tipping that was the inspiration and foundation for the present effort. The
authors thank Aditi Bagchi, Caroline Harada, Lee Harris, and Ian Slotin for their heroic efforts as
auditors. Orley Ashenfelter, Jennifer Brown, Marcus Cole, Emma Coleman, John Donohue, Ted
Eisenberg, Daniel Ho, Christine Jolls, Neal Katyal, Steve Levitt, Michael Lynn, and seminar
participants at Georgetown, Princeton, the University of New South Wales, the University of
North Carolina at Chapel Hill, and Yale provided helpful comments. The data and statistical
analysis (in Stata format) for this Essay are available at http://www.yalelawjournal.org.
tt Associate, Miller Shakman & Hamilton LLP.
ttt Ph.D. candidate, Department of the History of Science, Harvard University.
1613

Imaged with the Permission of Yale Law Journal

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