What Should a Company Listen to?

Conventional Six Sigma practice uses customer satisfaction as the key voice-of-the-customer metric. This metric is problematic on two counts:

* Satisfaction has little linkage to market performance. More and more organizations are forsaking customer satisfaction as the voice of the customer as they begin to understand that happy customers are not necessarily profitable or loyal customers. In fact, companies such as AT&T and Cadillac learned that while their customer satisfaction scores were increasing, market share was actually decreasing.

* Satisfaction does not account for the interaction between quality and price. This is an important point because too often organizations think that to increase market share they simply have to reduce price. In reality, they may not have a pricing problem but rather a value problem. Customers are not willing to pay the price that the organization is asking for the quality that they are going to receive. The interplay between quality and price is value, and value has proven to be one of the best predictors of market share.


For strategic applications of Six Sigma, getting the right voice of the customer is critically important. Understanding how Six Sigma initiatives are consistent with strategy is the first step. Knowing which customers will provide the correct voice and what to listen to also is important. Customer value is increasingly the metric of choice. It is being adopted because of its linkages to market performance and its ability to better understand the dynamics of customer behavior. It is a powerful metric for identifying and directing Six Sigma projects and initiatives.