The direct implications of satisfaction-based models are associated with the consumers’ reactions to improvements in product performance. These models acknowledge that the answer can be nonlinear and asymmetric, with different answers for situations of the correct or incorrect performance of the attribute. The debate at hand firstly relates to how satisfaction or dissatisfaction with an attribute affects the user’s overall satisfaction with a product or service (Oliva, Oliver and MacMillan, 1992). Nevertheless, this can also support the need to contemplate the possible advantages of having two different evaluations for each attribute: one to evaluate the degree of satisfaction with the attribute and the other to evaluate the degree of dissatisfaction