Diegetic Tool Management in a Virtual Reality Training Simulation

Researchers have suggested that diegetic interfaces can enhance users’ sense of presence and immersion in virtual reality. We present a study (N = 58) in which we compare participants’ experiences of diegetic and non-diegetic interfaces, in a prototype VR CSI training application. Contrary to expectations, we do not find evidence that participants’ sense of presence is elevated when using the diegetic interface; however, we suggest that this may be due to reported higher levels of perceived workload. We conclude by discussing the relationship between diegetic interface design and interaction fidelity, and highlighting trade-offs between fidelity and engagement.