Eight items assess how easily a person believes a product can be used and learned, covering trial-and-error exploration, memory demands, mental effort, clarity of interaction, and overall ease.
7-point Likert (1=strongly disagree, 7=strongly agree)
Full scale items shown. Always cite the original source when using this scale in research.
Combined items from Chin, Diehl, and Norman (1988) and Davis, Bagozzi, and Warshaw (1989). Alphas .93–.95 across multiple studies. Applied to feature-rich consumer products (e.g., cameras, mobile phones).
Thompson, D. V., Hamilton, R. W., & Rust, R. T. (2005). Feature fatigue: When product capabilities become too much of a good thing. Journal of Marketing Research, 42(4), 431–442.
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