Research On Interaction Design Of Mobile Phone Shopping Application For Elderly Based On Mental Model

With the popularization of the Internet and the development of information technology,great changes have taken place in people's consumption patterns.Mobile shopping has become the trend of the new era.Among them,the consumption of the elderly Internet users is growing rapidly,and the elderly are becoming a new generation of mobile shopping.However,the existing mobile phone shopping application is mainly designed for the young group.Due to the cognitive degeneration and the decline of physical function,the elderly cannot avoid a series of problems when using the shopping application.However,the current shopping application does not provide satisfactory solutions.Therefore,this article studies the mental model of the elderly shopping by the mobile phone and do research on requirements and the interactive pain points which they meet in using shopping application,and the put forward suitable interaction design strategy of shopping application for the old people.At last,the highest frequency of shopping application-Mobile Taobao will be designed as an example to carry on the design strategy.This paper firstly sorts out the development context of mental model and its classification from the human-computer perspective through literature research,and summarizes its design methods in the four design stages(exploration stage,definition stage,development stage and delivery stage).According to the research on the physical and mental characteristics of the elderly,it is found that:in terms of psychological characteristics,affected by the atrophy of working memory capacity,the information organization and extraction time of the elderly is long,and the short-term memory gradually declines.In the physical characteristics,they will have presbyopia,vision narrowing,hypohaptic,hand strength reduction and other problems.On this basis,the paper analyzes the correlation between the physical and mental characteristics of the elderly and the indicators of interaction design by using the asymmetric clustering matrix method,and obtains the interaction design strategies of mobile shopping applications in terms of "functional layout","information architecture","visual design" and "operation feedback".In the goal-oriented design process,questionnaire survey,user interview,behavioral observation and other methods were used to collect and record the process and behavior of the elderly people using the shopping app Mobile Taobao,so as to construct the mental model of the elderly people's mobile shopping.The model consists of six mental spaces of "purchase motivation","access to information","commodity retrieval","commodity browsing","commodity decision" and " payment".According to the mental model,the requirements and interaction behaviors in the mobile shopping process of the elderly were analyzed and the design was completed.Finally,the usability test is used to find out the problems in the design and further complete the design iteration.Through literature and user research,this study summarized the interaction design method of mental model and the interaction design strategy of shopping application for the elderly,providing relevant theoretical experience for the subsequent design research of shopping application for the elderly.The design of "mobile taobao" provides reference value for the practice of shopping application.