The order effect on online review helpfulness: A social influence perspective

Review helpfulness is receiving increasing attention by academics and practitioners along with the growing problem of information overload in the Internet age. Prior studies on online review helpfulness mainly focus on the direct influences of review- and reviewer-specific characteristics. An implicit underlying assumption of these studies is that reviews for a given product are independent of each other. As such, the existence of social influence among reviewers is much overlooked in the literature on review helpfulness. To fill this gap, this study as a first attempt to explore the order effect on review helpfulness, aims to investigate whether, how, and why the order of a review will affect review helpfulness from a social influence perspective. With an analysis of 70,610 restaurant reviews collected from Yelp.com, this study finds that the order of a review negatively relates to review helpfulness. Moreover, the negative effect of review order on review helpfulness is weakened when the reviewer has more social connectedness or a higher level of expertise, or when the review is more negative in content or more recently posted. We examine social influence effects on review helpfulness through effect of review order.We identify boundary conditions for the effect of review order.Review order has a negative effect on review helpfulness.The order effect is weaker for more connected or expert reviewers.The order effect is weaker for more negative or recently posted reviews.

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