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http://dx.doi.org/10.5392/JKCA.2020.20.04.111

A Study on the Effectiveness of the Exclusion Calculation for the Product Inclusive Design: A Case Study on the Evaluation of Electric Iron  

Zhang, Ji-Fa (동서대학교 일반대학원 디자인학과)
Go, Jung-Wook (동서대학교 일반대학원 디자인학과)
Publication Information
The Journal of the Korea Contents Association / v.20, no.4, 2020 , pp. 111-123 More about this Journal
Abstract
It is very important to ensure usability and inclusion in product design and development. Exclusion Calculation, developed by Simon Keates and P. John Clarkson at Cambridge University's Engineering Design Center, assesses the usability and inclusiveness of the product. In context of inadequate research on effectiveness of Exclusion Calculation, this study carried out the experimental evaluation of electric iron and discussed the effectiveness of the Exclusion Calculation from usefulness, accuracy of its evaluation results and the intuitiveness of the evaluation items. 11 designers used Exclusion Calculation in product evaluation and estimated the intuitiveness of 14 evaluation items in Exclusion Calculation by questionnaire. Then usefulness of the evaluation results was discussed and the accuracy of the evaluation results was analyzed by standard deviation. From the evaluation results, the research found that Exclusion Calculation could help designers identify the usability problems and the generality of usability problems related to the physical characteristics of the products, but it can not find the problems from logical aspect of using. In addition, the ambiguity of the evaluation scale in Exclusion Calculation leads to lower accuracy of the evaluation results. Most of evaluation items in Exclusion Calculation were easy to be identified and judged, while evaluation items related to cognitive abilities are less intuitive.
Keywords
Exclusion Calculation; Effectiveness Analysis; Inclusive Design;
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