Understanding the Social Learning Effect in Contagious Switching Behavior

Forthcoming in Management Science

70 Pages Posted: 14 Apr 2019

See all articles by Mandy Hu

Mandy Hu

The Chinese University of Hong Kong (CUHK) - Department of Marketing

Sha Yang

University of Southern California - Marshall School of Business

Daniel Yi Xu

Duke University

Date Written: July 12, 2018

Abstract

We study the contagious switching behavior related to a consumer’s choice of wireless carriers, that is, that a consumer is more likely to switch wireless carriers if more of their contacts from the same carrier have switched. Contagious switching (or a positive network effect) can be driven by information-based social learning, as well as other mechanisms related to network size. While previous marketing literature has documented the social-learning effect, most of the applications studied involve products in which consumers usually do not enjoy any direct benefits from a large network other than from information-based social learning. We explore the importance of the social-learning effect relative to other mechanisms that may also lead to the network effect. We propose a dynamic structural model with interpersonal interactions. To model the social-learning effect, a consumer uses feedback from his or her contacts who have switched from a focal carrier to update his or her quality expectations of alternative carriers. Our model further accounts for two unique aspects of consumer strategic learning: (i) the individual’s perception on the signal of alternative carriers from contacts who switch is systematically different based on whether the signal comes from a loyal contact; and (ii) that the perceived noisiness of the signal on alternative carriers from a contact who has switched depends on the strength of the relationship between the individual and the contact. The remaining network effect not captured through social learning is modeled as a function of the size of the network. We solve the model with a two-step dynamic programming algorithm, with the assumption that a consumer is forward-looking and decides whether to stay with the same service carrier in each period by maximizing the total utility received from that day onward. We apply the proposed model to the dataset of a mobile network operator in a European country. We find that churning/switching behavior is contagious in the network context and that one-third of general network effects can be attributed to social learning. We also detect strategic learning by consumers from their contacts in two ways: the experience signal on alternative carriers from a more loyal contact who has switched from the focal carrier is perceived to be more positive than that from a less loyal contact, and the social-learning effect is stronger from an individual’s closest contacts. The simulation analysis demonstrates the value of our model in helping a company prioritize its CRM effort.

Suggested Citation

Hu, Mandy and Yang, Sha and Yi Xu, Daniel, Understanding the Social Learning Effect in Contagious Switching Behavior (July 12, 2018). Forthcoming in Management Science. Available at SSRN: https://ssrn.com/abstract=3355045

Mandy Hu (Contact Author)

The Chinese University of Hong Kong (CUHK) - Department of Marketing ( email )

Room 1101, 11/F, Cheung Yu Tung Building
12 Chak Cheung Street
Shatin, N.T.
China

Sha Yang

University of Southern California - Marshall School of Business ( email )

701 Exposition Blvd
Los Angeles, CA 90089
United States

Daniel Yi Xu

Duke University ( email )

100 Fuqua Drive
Durham, NC 27708-0204
United States

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