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Quarterly Journal of Economics Vol. 125 No. 1 2010

What's Advertising Content Worth? Evidence from a Consumer Credit Marketing Field Experiment*

Marianne Bertrand1,2; Dean Karlan3,4; Sendhil Mullainathan5,4; Eldar Shafir6; Jonathan Zinman7,8,9

1 Center for Economic and Policy Research · 2 University of Chicago · 3 Yale University · 4 Abdul Latif Jameel Poverty Action Lab · 5 Harvard University Press · 6 Princeton University · 7 Dartmouth College · 8 Innovations for Poverty Action · 9 Dartmouth Hospital

Abstract

Firms spend billions of dollars developing advertising content, yet there is little field evidence on how much or how it affects demand. We analyze a direct mail field experiment in South Africa implemented by a consumer lender that randomized advertising content, loan price, and loan offer deadlines simultaneously. We find that advertising content significantly affects demand. Although it was difficult to predict ex ante which specific advertising features would matter most in this context, the features that do matter have large effects. Showing fewer example loans, not suggesting a particular use for the loan, or including a photo of an attractive woman increases loan demand by about as much as a 25% reduction in the interest rate. The evidence also suggests that advertising content persuades by appealing “peripherally” to intuition rather than reason. Although the advertising content effects point to an important role for persuasion and related psychology, our deadline results do not support the psychological prediction that shorter deadlines may help overcome time-management problems; instead, demand strongly increases with longer deadlines.

DOI
10.1162/qjec.2010.125.1.263
Volume
125
Issue
1
Pages
263-305
Language
en
Sources
bibtex:phds-export.bib openalex crossref

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