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Scale Reviews

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Testimonial

The Marketing Scales website is a gold mine of information.  It is the only source that helps me understand the psychometric quality of the instruments used in past research.  I recommend that researchers bookmark this site . . . they will be back!
Bob Moritz
Marshfield Clinic Research Foundation

Disconfirmation

The scale has been used to measure the degree to which a consumer's expectations regarding a decision are not met. The three-item version has been used most (Oliver 1993; Oliver and Swan 1989a, 1989b; Wallace, Giese, and Johnson 2004, Westbrook 1987), but a two-item, seven-point version has been used as well (Oliver 1980).