This scale measures how confident a consumer feels that they made the right choice and got a good deal on a recent purchase. Pizzutti, Gonçalves, and Ferreira (2022) used it across two waves of data collection examining information search after a purchase.
7-point scale (strongly disagree to strongly agree)
Full scale items shown. Always cite the original source when using this scale in research.
Reliability was solid in both waves (α = .87, Wave 1; α = .83, Wave 2; Pizzutti, Gonçalves, and Ferreira 2022, p. 1002). PLS-SEM analysis supported convergent and discriminant validity (AVE = .80 and .73 across waves). Three of eight items from an earlier post-purchase dissonance scale were selected for use here, which is treated as an adaptation given the minority subset drawn rather than the full instrument being reused. The original authors labeled the construct "uncertainty," but the items as worded reflect certainty with no indication of reverse coding; researchers wanting to measure uncertainty specifically should reverse-code or rephrase the items.
Pizzutti, Cristiane, Renata Gonçalves, and Maria Ferreira (2022), "Information Search Behavior at the Post-Purchase Stage of the Customer Journey," Journal of the Academy of Marketing Science, 50 (5), 981-1010.
Free access to 2581+ psychometric scales at PsychScales