A four-item Likert-type scale measuring the degree to which a consumer perceives choosing from a particular product category as difficult due to uncertainty about which option is correct. Originally called 'probability of error' by Habel and Klarmann (2015), the scale captures the subjective risk of making a wrong choice rather than perceived financial or social risk. It was used in a large cross-category survey (n = 1,522 U.S. adults randomly assigned to one of 29 product categories) as a product-category moderator of the downsizing–satisfaction relationship. Items were adapted from the Risk Probability subscale of Laurent and Kapferer's (1985) Consumer Involvement Profile. Construct reliability = .93 and AVE = .77 indicate strong psychometric quality, with reliability reported across all 29 product categories.
Habel, J., & Klarmann, M. (2015). Customer reactions to downsizing: When and how is satisfaction affected? Journal of the Academy of Marketing Science, 43(6), 768–789.
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