Social Interactions and Bias in the Evaluation of Online Reviews

Posted: 9 May 2019 Last revised: 10 Feb 2020

See all articles by Yinan Yu

Yinan Yu

Desautels Faculty of Management, McGill University

Warut Khern-am-nuai

McGill University - Desautels Faculty of Management

Alain Pinsonneault

McGill University - Desautels Faculty of Management

Zaiyan Wei

Purdue University - Krannert School of Management

Date Written: February 10, 2020

Abstract

User-generated content, online reviews in particular, has been increasingly integrated into the management of customer responses and therefore into the core operations of platforms. Despite the extensive studies on the generation of online reviews and their potential impacts, research is scant regarding the factors that might affect the evaluation of online reviews by peer groups. In this study, we focus on the bias in review evaluations and argue that social interactions in various forms on online review platforms contribute to the bias. Using a unique dataset from a major review platform, we find that, ceteris paribus, reviews posted by more socially engaged users receive more helpfulness votes than those by less socially engaged users. Similarly, users tend to vote for reviews written by their mutual followers than for those written by non-followers. In addition, we find that less socially engaged users review a broader range of products (or services) but are less likely to stay on the platform, which may further contribute to the bias in review evaluations. Our findings, therefore, underscore an important factor—social factors—contributing to the bias in review evaluations and have implications for the management of customer response, content quality, and operational performance of platforms.

Keywords: social technology, social interactions, online reviews, review evaluation

Suggested Citation

Yu, Yinan and Khern-am-nuai, Warut and Pinsonneault, Alain and Wei, Zaiyan, Social Interactions and Bias in the Evaluation of Online Reviews (February 10, 2020). Available at SSRN: https://ssrn.com/abstract=3369407

Yinan Yu

Desautels Faculty of Management, McGill University ( email )

526 Bronfman Building
1001 Sherbroke West
Montreal, Quebec
Canada

Warut Khern-am-nuai (Contact Author)

McGill University - Desautels Faculty of Management ( email )

1001 Sherbrooke St. West
Montreal, Quebec H3A1G5 H3A 2M1
Canada

Alain Pinsonneault

McGill University - Desautels Faculty of Management ( email )

1001 Sherbrooke St. West
Montreal, Quebec H3A1G5 H3A 2M1
Canada

Zaiyan Wei

Purdue University - Krannert School of Management ( email )

100 Grant St
West Lafayette, IN 47907-2076
United States
(765) 494-5958 (Phone)

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