Abstract
This study examines the influence of the valence of online customer reviews on sales outcomes based on prospect theory. Numerous studies have revealed the importance of customer reviews in online marketing. However, only few studies have explored the impact of online customer reviews on sales outcomes in the dynamic process. Prior studies in behavioral economics literature have indicated that people differently value gains and losses and that losses have more emotional impact than an equivalent amount of gains. This study verifies whether prospect theory applies to the relation between online customer reviews and sales outcomes. Relevant data were collected from Amazon.co.jp, and three statistical models were employed to investigate the relation between the two factors. Major findings confirm that negative customer reviews considerably impact online sales than positive reviews. Furthermore, the findings indicate that the marginal effects of positive and negative reviews decrease with the increase in their volume. The results of this study will enable marketers to compare the relative sales effects of different types of customer reviews and improve the effectiveness of customer service management.
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Notes
A stock keeping unit (SKU) is a 6–8 character long alphanumeric code used to identify a product and track its inventory. The SKU for each product and seller is a unique number.
F-statistics for the category of portable batteries, earphones, and pump shoes are \(F_{\left( 1,326\right) }=5.78\,\left( p<0.05\right) \), \(F_{\left( 1,365\right) }=3.26\,\left( p<0.10\right) \), and \(F_{\left( 1,1207\right) }=4.73\,\left( p<0.05\right) \).
The ratio of online reviews is \(\left[ 0,R\right) \), where R is an unknown positive number that satisfies \(R<\left| \frac{\beta _{k1}}{2\beta _{k2}}\right| ,\left( k=1,2\right) \) and \(R<100\) simultaneously.
A large value of sales rank represents a small scale of sales volume.
To avoid taking the logarithm of zero, one cent is added to the positive and negative ratios.
References
Archak, N., Ghose, A., & Ipeirotis, P. G. (2011). Deriving the pricing power of product features by mining consumer reviews. Management Science, 57(8), 1485–1509.
Baumeister, R. F., Bratslavsky, E., Finkenauer, C., & Vohs, K. D. (2001). Bad is stronger than good. Review of General Psychology, 5(4), 323.
Becker, G. S. (1991). A note on restaurant pricing and other examples of social influences on price. Journal of Political Economy, 99(5), 1109–1116.
Cabral, L., & Hortacsu, A. (2010). The dynamics of seller reputation: Evidence from eBay. The Journal of Industrial Economics, 58(1), 54–78.
Casaló, L. V., Flavián, C., Guinalíu, M., & Ekinci, Y. (2015). Avoiding the dark side of positive online consumer reviews: Enhancing reviews’ usefulness for high risk-averse travelers. Journal of Business Research, 68(9), 1829–1835.
Chen, P. Y., Dhanasobhon, S., & Smith, M. D. (2008). All reviews are not created equal: The disaggregate impact of reviews and reviewers at Amazon. com. Working paper. Carnegie Mellon University.
Chen, P.Y., Wu, S., & Yoon, J. (2004). The impact of online recommendations and consumer feedback on sales. In: Proceedings of the 25 international conference on information systems, pp 711–724.
Chevalier, J. A., & Mayzlin, D. (2006). The effect of word of mouth on sales: Online book reviews. Journal of Marketing Research, 43(3), 345–354.
Cui, G., Lui, H. K., & Guo, X. (2012). The effect of online consumer reviews on new product sales. International Journal of Electronic Commerce, 17(1), 39–58.
De Maeyer, P. (2012). Impact of online consumer reviews on sales and price strategies: A review and directions for future research. Journal of Product and Brand Management, 21(2), 132–139.
Dellarocas, C. (2003). The digitization of word of mouth: Promise and challenges of online feedback mechanisms. Management Science, 49(10), 1407–1424.
Dellarocas, C. (2006). Strategic manipulation of internet opinion forums: Implications for consumers and firms. Management Science, 52(10), 1577–1593.
Dimoka, A., Hong, Y., & Pavlou, P.A. (2012). The impact of online recommendations and consumer feedback on sales: Theory and evidence. MIS Quarterly 36(2), 395–426.
Duan, W., Gu, B., & Whinston, A. B. (2008). Do online reviews matter?—An empirical investigation of panel data. Decision Support Systems, 45(4), 1007–1016.
Fiske, S. T. (1980). Attention and weight in person perception: The impact of negative and extreme behavior. Journal of Personality and Social Psychology, 38(6), 889–906.
Floyd, K., Freling, R., Alhoqail, S., Cho, H. Y., & Freling, T. (2014). How online product reviews affect retail sales: A meta-analysis. Journal of Retailing, 90(2), 217–232.
Forman, C., Ghose, A., & Wiesenfeld, B. (2008). Examining the relationship between reviews and sales: The role of reviewer identity disclosure in electronic markets. Information Systems Research, 19(3), 291–313.
Ghose, A., & Ipeirotis, P. G. (2011). Estimating the helpfulness and economic impact of product reviews: Mining text and reviewer characteristics. IEEE Transactions on Knowledge and Data Engineering, 23(10), 1498–1512.
Godes, D., & Mayzlin, D. (2004). Using online conversations to study word-of-mouth communication. Marketing Science, 23(4), 545–560.
Gu, B., Park, J., & Konana, P. (2012). The impact of external word-of-mouth sources on retailer sales of high-involvement products. Information Systems Research, 23(1), 182–196.
Kahneman, D. (2011). Thinking, fast and slow. Basingstoke: Macmillan.
Kahneman, D., & Tversky, A. (1979) Prospect theory: An analysis of decision under risk. Econometrica, 47(2), 263–291.
Khare, A., Labrecque, L. I., & Asare, A. K. (2011). The assimilative and contrastive effects of word-of-mouth volume: An experimental examination of online consumer ratings. Journal of Retailing, 87(1), 111–126.
King, R. A., Racherla, P., & Bush, V. D. (2014). What we know and don’t know about online word-of-mouth: A review and synthesis of the literature. Journal of Interactive Marketing, 28(3), 167–183.
Lee, J., Park, D. H., & Han, I. (2008). The effect of negative online consumer reviews on product attitude: An information processing view. Electronic Commerce Research and Applications, 7(3), 341–352.
Li, X., & Hitt, L. M. (2008). Self-selection and information role of online product reviews. Information Systems Research, 19(4), 456–474.
Liu, Y. (2006). Word of mouth for movies: Its dynamics and impact on box office revenue. Journal of Marketing, 70(3), 74–89.
Mudambi, S.M., & Schuff, D. (2010). Research note: What makes a helpful online review? A study of customer reviews on Amazon.com. MIS Quarterly, 34(1), 185–200 (2010)
Ogut, H., & Onur Tas, B. K. (2012). The influence of internet customer reviews on the online sales and prices in hotel industry. The Service Industries Journal, 32(2), 197–214.
Sun, M. (2012). How does the variance of product ratings matter? Management Science, 58(4), 696–707.
Taylor, S. E. (1991). Asymmetrical effects of positive and negative events: The mobilization-minimization hypothesis. Psychological Bulletin, 110(1), 67–85.
Tversky, A., & Kahneman, D. (1986). Rational choice and the framing of decisions. Journal of Business, 59(4), S251–S278.
Tversky, A., & Kahneman, D. (1992). Advances in prospect theory: Cumulative representation of uncertainty. Journal of Risk and Uncertainty, 5(4), 297–323.
Ullrich, S., & Brunner, C. B. (2015). Negative online consumer reviews: Effects of different responses. Journal of Product and Brand Management, 24(1), 66–77.
Yang, J., Kim, W., Amblee, N., & Jeong, J. (2012). The heterogeneous effect of WOM on product sales: Why the effect of WOM valence is mixed? European Journal of Marketing, 46(11/12), 1523–1538.
Ye, Q., Law, R., & Gu, B. (2009). The impact of online user reviews on hotel room sales. International Journal of Hospitality Management, 28(1), 180–182.
Ye, Q., Law, R., Gu, B., & Chen, W. (2011). The influence of user-generated content on traveler behavior: An empirical investigation on the effects of e-word-of-mouth to hotel online bookings. Computers in Human Behavior, 27(2), 634–639.
Ye, Q., Xu, M., Kiang, M., Wu, W., & Sun, F. (2013). In-depth analysis of the seller reputation and price premium relationship: A comparison between eBay US and TaoBao China. Journal of Electronic Commerce Research, 14(1), 1–10.
Zhang, J., Wedel, M., & Pieters, R. (2009). Sales effects of attention to feature advertisements: A Bayesian mediation analysis. Journal of Marketing Research, 46(5), 669–681.
Zhang, Z., Li, X., & Chen, Y. (2012). Deciphering word-of-mouth in social media: Text-based metrics of consumer reviews. ACM Transactions on Management Information Systems, 3(1), 1–23.
Zhu, F., & Zhang, X. (2010). Impact of online consumer reviews on sales: The moderating role of product and consumer characteristics. Journal of Marketing, 74(2), 133–148.
Acknowledgements
The authors wish to thank the editor and two anonymous reviewers for their reviews and constructive suggestions throughout the review process. We also thank Prof. Miyako Mineo for helpful comments on this paper. This work was supported by JSPS KAKENHI Grant Numbers JP15H06747, JP17K18152.
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Aoi Shimizu: Graduated in September 25, 2017
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Li, Z., Shimizu, A. Impact of Online Customer Reviews on Sales Outcomes: An Empirical Study Based on Prospect Theory. Rev Socionetwork Strat 12, 135–151 (2018). https://doi.org/10.1007/s12626-018-0022-9
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DOI: https://doi.org/10.1007/s12626-018-0022-9