A multiple-item likert scale designed to measure the degree to which a person is doubtful that a claim by a marketer is true.
Biswas, Abhijit, Sujay Dutta, and Chris Pullig (2006), “Low Price Guarantees as Signals of Lowest Price: The Moderating Role of Perceived Price Dispersion,” Journal of Retailing, 82 (3), 245-257.
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