NATIONAL BUREAU OF ECONOMIC RESEARCH
NATIONAL BUREAU OF ECONOMIC RESEARCH

Promotional Reviews: An Empirical Investigation of Online Review Manipulation

Dina Mayzlin, Yaniv Dover, Judith A. Chevalier

NBER Working Paper No. 18340
Issued in August 2012

---- Acknowledgements -----

The authors contributed equally, and their names are listed in reverse alphabetical order. We thank the Wharton Interactive Media Initiative, the Yale Whitebox Center, and the National Science Foundation (Chevalier) for providing financial support for this project. We thank Steve Hood, Sr. Vice President of Research at STR for helping us with data collection. We also thank David Godes and Avi Goldfarb for detailed comments on the paper. We also thank numerous seminar participants for helpful comments. All errors remain our own.

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