Abstract
In the literature on marketing models, the assumption of mixed word-of-mouth has been limited to the Bass diffusion model. Yet explicit leveraging of the originating factors of such assumption is lacking. Apart from that example, mixed word-of-mouth has been disregarded in contagion sales models. This paper bridges the gap by suggesting a sales model, where both positive and negative word-of-mouth affect the attraction rate of new customers, along with advertising. The difference between positive and negative word-of-mouth is based on the distinction between satisfied and dissatisfied current customers, which is supposed to depend on conformance quality. A primary issue in this paper is to determine how a firm should determine the optimal intertemporal trade-off between investing in advertising-dependent word-of-mouth and quality-dependent word-of-mouth. To address this issue, a contagion sales model is suggested where mixed autonomous word-of-mouth alone can lead to either commercial success or failure of a given brand.
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Notes
Design quality is supposed to increase the desirability of the product by enhancing the product’s functional performance.
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Acknowledgments
This research was supported by the Centre for Research of ESSEC Business School (France), the Austrian Science Fund (FWF) under Grants Nos. P25979-N25 and P23084-N13 and FWO Project G.0809.12N (Belgium). The authors acknowledge very helpful comments from two anonymous referees. The usual disclaimer applies.
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El Ouardighi, F., Feichtinger, G., Grass, D. et al. Advertising and Quality-Dependent Word-of-Mouth in a Contagion Sales Model. J Optim Theory Appl 170, 323–342 (2016). https://doi.org/10.1007/s10957-015-0855-0
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DOI: https://doi.org/10.1007/s10957-015-0855-0