Stephen W. Song, *Donghun Chung

Abstract:

This study examines the impact of diegetic user interfaces on user experience in virtual reality environments, framing the investigation within the realms of the Technology Acceptance Model and Self-Determination Theory. Employing a 2 x 2 within-subjects experimental design, the research manipulates the presence of diegetic cues and the mode of score display (non-diegetic heads-up display versus diegetic integration) to assess their effects on user enjoyment. A bespoke virtual reality stimulus was created expressly for this experiment. The findings indicate that the inclusion of a diegetic user interface significantly enhances user enjoyment through a serial mediation effect. These results underscore the potential for diegetic design elements to improve virtual reality interfaces, suggesting that certain design strategies may significantly influence user satisfaction and acceptance. The study concludes with practical implications for virtual reality interface design, advocating for a strategic emphasis on diegetic elements to foster more immersive and enjoyable user experiences.

Keywords: Virtual reality, user experience, technology acceptance model, enjoyment, self-determination theory