Introducing the Fundamental User Needs (FUN) Scales
Assessing Need Satisfaction and Frustration in Design-Mediated Interactions
S. Huang (TU Delft - Form and Experience)
P.M.A. Desmet (TU Delft - Form and Experience)
R Mugge (TU Delft - Responsible Marketing and Consumer Behavior)
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Abstract
This paper introduces the Fundamental User Needs (FUN) Scales, tailored to measure need satisfaction and frustration in design-mediated interactions. The development and initial validation process included a preparation phase and four studies. Adopting a deductive approach, we generated a pool of 780 items and distilled them into the first version of the FUN Scales: a 52-item Need Satisfaction Scale and a 52-item Need Frustration Scale. Content validity was assessed by nine experts, leading to a refined second version. Exploratory and confirmatory factor analyses with 502 participants examined the scales’ factorial structure, reliability, and validity, resulting in a finalized version with 39 items per scale. Finally, we proposed two scoring approaches to facilitate scale application. The FUN Scales can serve as a robust diagnostic tool for quantifying the psychological impact of design and technology through the lens of need fulfillment, offering structure and inspiration for human-centered design research and practice.
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