Extremity bias in online reviews: The role of attrition
Brandes, Godes and Mayzlin, JMR 59(4), 2022, 675-695. Proposes differential attrition: moderate reviewers more likely to stop before posting. Analytical model combines it with differential utility and base rates. Only utility-based and attrition-based mechanisms explain why an unincentivised review solicitation email from an online travel platform reduced review extremity in a large field experiment; empirical evidence for both attrition and utility.
Brandes, Godes and Mayzlin, JMR 59(4), 2022, 675-695. Proposes differential attrition: moderate reviewers more likely to stop before posting. Analytical model combines it with differential utility and base rates. Only utility-based and attrition-based mechanisms explain why an unincentivised review solicitation email from an online travel platform reduced review extremity in a large field experiment; empirical evidence for both attrition and utility.
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Brandes, L., Godes, D., & Mayzlin, D. (2022). Extremity bias in online reviews: The role of attrition. Journal of Marketing Research, 59(4), 675-695. doi:10.1177/00222437211073579 https://doi.org/10.1177/00222437211073579