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This scales book is a classic in psychometrics. It is instrumental for survey researchers in the fields of advertising, marketing, consumer psychology, and other related fields that rely largely on attitudinal measures. My copy has gotten me through years of field research by helping provide testable, reliable scales.
Angeline Close Scheinbaum, Ph.D.
University of Texas at Austin

legitimate

Four, seven-point, semantic differentials measure how honest and legitimate something is believed to be.

With four items, the scale measures the degree to which a product is believed to be genuine and original in some unstated way.  

Four, seven-point Likert-type items measure to what degree a person believes that a social standard of a particular group of people makes sense and is of benefit to them.  The norm is not stated in the items themselves and must be provided to participants some way.

Nine-point Likert-type items are used to measure a consumer’s belief that there is evidence that a particular product is genuinely a particular brand rather than a fake or confusingly similar one.  A two- and a four-item version are provided.

A consumer’s belief that a particular product contains the legitimate and genuine character of a particular brand is measured with three, nine-point Likert-type items. The scale could also be referred to as measuring “contagion” or “transferred essence.”