One-handed Disabled Product Design Based on CJM-KANO-AHP User Need Model
Authors: Qi Liu, Jin-Juan Duan, Pin Zhang
Abstract: One-handed disabled encounter many inconveniences in life. In order to help designers focus on the high-priority needs of the one-handed disabled and avoid the subjectivity of needs selection in product design, a product design method based on CJM (Customer Journey Map)-KANO (KANO Model)-AHP (Analytic Hierarchy Process) user need model for one-handed disabled is proposed. Firstly, the user needs of the one-handed disabled are collected comprehensively by CJM which helps to collect multi-scene needs. Secondly, the collected needs are classified according to the KANO model, needs are classified into must-be needs(M), one-dimensional needs(O), attractive needs(A), indifferent needs(I), reverse needs(R), and questionable needs(Q). And only the first three types of needs are retained. Thirdly, the user need hierarchy analysis model is constructed based on the AHP method， matrix judgment, weight calculation, and consistency check are conducted for the retaining needs ranking. Finally, the one-handed washboard was designed for addressing the first-ranking need of the one-handed disabled. The user need model based on CJM-KANO-AHP is applied in the product design process of one-handed disabled, which effectively solves the problem of multi-scene need collection and need prioritization. Compared with the existing methods that only rank the relatively limited number of needs in a single scene, our method ranks needs within the scope of multi-scene for the one-handed disabled which has more practical significance. It also provides ideas for similar product design processes.
Keywords: One, Handed Disabled, Four, Quadrant Method, Demand Screening, Potential Demand, Product Design
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