Some research suggests the customer loyalty may not be enough. A study was done by Timothy Keiningham, Lerzan Aksoy, Alexander Buoye, and Bruce Cooil that has some interesting findings. They performed a two-year longitudinal study of more than 17,000 consumers and examining purchases in more than a dozen industries in nine countries. According to the study, they asked a broad range of questions and purchase histories including satisfaction and loyalty measurements. Their analysis was based on the largest and most rigorous of its kind of survey at the time which indicated an interesting correlation; namely, the rank consumers assigned to a brand relative to other brands in the industry can be used as a predictor of “share of wallet.” They refer to the results of this outcome as the Wallet Allocation Rule (published by Wiley, 2015). The details of survey methodology, survey questions, and statistical tools used in the analysis were not available. This blog is based on their article published in the Harvard Business Review (which should be sufficient evidence that the methodology meets Harvard’s criteria for a valid survey).

Here are two of the findings that should be considered.

  1. Correlation between changes in satisfaction or intention to recommend and “share of wallet” was 0.1 – suggesting that satisfaction has little impact on changes in “share of wallet.”
  2. Correlation between changes in “share of wallet” score using their metric compared with a customer’s actual measured “share of wallet” was 0.8.

The Wallet Allocation Rule is proposed by the authors to be a better metric than customer satisfaction or NPS. In the survey they asked the consumers to assign a rank of the brand relative to other brands that the customers were using. The result was that ranking with respect to competitors was demonstrated as being more important than customer satisfaction when it comes to increasing “share of wallet.” The point they make is that the parameters which drive changes in “share of wallet” may not be the same parameters that drive the change in customer satisfaction.

This methodology is particularly useful from a sales perspective. However, this methodology has limited usefulness when operating in a supportive environment with limited, if any, competition of other brands of products (such as occurs with product support).

The evidence from the survey provides a strong case that ranking in the marketplace has more value than customer satisfaction when compared with the competition.

A secondary consideration is the impact of ranking on loyalty. The implication of loyalty follows from focusing on the parameters that have the greatest impact on rank. If the consumers are increasingly drawn to a particular brand, it is not unreasonable to believe there will be a component of loyalty that will follow that move of higher rank with the brand. The assumption that ranking has a greater long-term impact on loyalty that customer satisfaction needs further investigation.

The bottom line is that “share of wallet” may be the best metric when focused on increasing ranking with respect to competition. Although this study provides valid statistical support, its value is diminished when used as a metric for product support where “ranking” with competition has little meaning.

SOURCEThe Customer Institute
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Bill Bleuel
Dr. Bill Bleuel is an award-winning Professor of Decision Sciences at Pepperdine University’s Graziadio School of Business and Management. Dr. Bleuel’s expertise lies in the quantitative aspects of business. He specializes in the measurement and analysis of operations, customer satisfaction, customer loyalty and customer retention. He has held senior positions in engineering, marketing and service management at Xerox, Taylor Instrument Company and Barber Colman Company. Dr. Bleuel has also experience as general manager in two start-up companies that he co-founded.

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