Fake Reviews

Jacob Glazer, Helios Herrera, Motty Perry*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


We propose a model of product reviews in which some are genuine and some are fake in order to shed light on the value of information provided on platforms like TripAdvisor, Yelp, etc. In every period, a review is posted which is either genuine or fake. We characterise the equilibrium of the dynamic model and prove that it is unique. In equilibrium, valuable learning takes place in every period. Fake reviews, however, do slow down the learning process. It is established that any attempt by the platform to manipulate the reviews is counterproductive.

Original languageEnglish
Pages (from-to)1772-1787
Number of pages16
JournalEconomic Journal
Issue number636
StatePublished - 1 May 2021


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