An Event-based User Experience Evaluation Method for Virtual Reality Applications

With the development and advancement of Virtual Reality (VR) technology in recent years, hardware is no longer the main factor limiting VR into the public life, and the demand for user experience (UX) continues to increase. The development of VR is beginning to reveal a content-oriented trend. Whether the content is attractive enough will greatly affects users' experience and determine the service life of VR applications. Consequently, searching for interaction events that would affect VR UX is critical to improve user stickiness. At present, the researches on VR mainly focus on the improvement of hardware and software, and pay less attention to the content event design. Moreover, there is no unified and clear standard for VR UX evaluation. This paper attempts to find out the relationship between user traits, VR interaction events and user experience through realistic experiments. This paper firstly define four types of VR interaction events, and design a questionnaire for collecting the tester's traits and their subjective evaluation. During the experiment, objective physiological data of the testers and their participation process were recorded. The 80 testers were divided into two groups to experience two types of VR games with constant time. The statistical method and improved Prism algorithm were used to find out the correlation among user traits, type of game interaction events and user experience. The experiment results could provide references for VR designers and developers, and at the same time provide the preliminary study to standardized VR user experience evaluation.