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!
credibility
The scale has three, seven-point items which measure a person’s disbelief that a particular company is one of the worst ones in its industry as reported by a major consumer organization. The scale instructions frame the situation as hypothetical but minor changes could make the scale amenable for use with an actual event.
Using three, nine-point Likert-type items, the scale measures the extent to which a person believes a certain advertisement provides accurate information.
Six, seven-point Likert-type items are used to measure how well organized and easy to understand an ad is which a person has seen.
Five, seven-point Likert-type items are used to measure a person’s attitude regarding the bias and believability of a particular news story to which he/she has been exposed.
Eight, nine-point items are used to measure how much a consumer thinks that a price listed for a certain product is the actual price that will be charged by a particular retailer.
Eight, seven-point semantic differentials are used to measure a person’s attitude about an article with an emphasis on its usefulness and credibility.
The degree to which a person believes that advertising is trustworthy and provides truthful information about products is measured with four, seven-point Likert-type items. As discussed further below, the items are phrased with respect to advertising in general but they can be easily adapted for use with particular media.
The extent to which a person not only thinks an advertisement is unbelievable, but that it is also misleading, is measured in this scale with three, nine-point semantic-differentials.
The ease of comprehending a stimulus such as a message is measured in this scale with seven, seven-point semantic differentials. The construct is sometimes referred to as fluency.
The extent to which a person believes that a particular story and the facts stated in it are correct is measured in this scale using three, seven-point Likert-type items. The scale seems to be amenable for use with advertisements, books, and movies by simply replacing the word "story" in each item with something else if desired.
