User Experience Index Scale : Quantifying Usability by Magnitude Estimation
V Shinobu, Utamura V Chikako, Murase V Yukiyo, Hamatani, V Yukinori Nagano · Fujitsu Scientific and Technical Journal · 2009
Conventional methods of evaluating usability often take a problem-discovery approach that focuses on making improvements, thereby limiting their use in product evaluation during the development process. Moreover, there are currently no effective techniques for obtaining the overall usability of a target product in a quantitative manner, which means that some doubt remains in usability-evaluation results. Magnitude usability, which applies the magnitude estimation method of psychophysics, is a sophisticated technique that can solve these problems. Using magnitude usability, Fujitsu Design Ltd. has developed the user experience (UX) index scale, which can be used in diverse human-centered design processes. The UX index scale can be easily understood by non-specialists and can be used to uncover problems and make policy decisions in various types of product-development scenarios.