Özet:

SUPR-Q (- Standardized User Experience Percentile Rank Questionnaire) is a usability scale that is highly suitable for assessing websites and mobile applications which have transactional capabilities, such as shopping and e-commerce services. The Turkish adaptation of 8-item SUPR-Q is evaluated through 120 responses collected from users of Turkish shopping websites. The evidence for the 4-factor model of Appearance, Loyalty, Usability and Trust was partly verified based on the dataset, using Partial Least Squares based Confirmatory Factor Analysis. For this reason, we proposed a two-factor measurement model of Ergonomics and Credibility dimensions, considering the ongoing discussions on the close relationship between hedonic and pragmatic quality of digital artefacts, and the strong causal relationship between trust and loyalty given in the literature. Both four-factor and two-factor models, showed a good level of internal consistency and they are sensitive to the differences between web sites as well as mobile apps. Both scales’ scores have correlated with the relevant subscales of Turkish Computer System Usability Questionnaire. Our results suggest that our translated SUPR-Q items are capable of distinguishing between the sites as well as mobile shopping apps, and more sensitive than the UMUX applied in English, while its sensitivity is comparable with the Turkish T-CSUQ-SV. Considering that SUPR-Q has fewer items, it can be a good choice for researchers who need a brief tool for assessing web sites in terms of subjective user experience.

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