Three items measuring how unique, different, and distinct a consumer perceives a particular purchase or consumption experience to be relative to other purchases they have had. Bastos and Brucks (2017) developed the scale to assess 'purchase uniqueness' in a study examining whether experiential or material purchases generate greater conversational value and subjective wellbeing. Participants recalled a past purchase and rated it on the scale. The blanks in each item should be replaced with a reference to the focal purchase or experience.
7-point Likert (1=strongly disagree, 7=strongly agree)
Full scale items shown. Always cite the original source when using this scale in research.
Alpha was .88. An EFA across five scales confirmed that uniqueness items loaded on a common factor, supporting unidimensionality. Administered to MTurk participants (n=153). This scale differs from Object Scarcity Perception (Smith et al. 2016) in that it is anchored in comparison to the respondent's own prior experiences, whereas the Smith et al. measure focuses on the absolute rarity of a specific object.
Bastos, W., & Brucks, M. (2017). How and why conversational value leads to happiness for experiential and material purchases. Journal of Consumer Research, 44(3), 598–612.
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