Reaction Time as a Proxy for Presence in Mixed Reality with Distraction

TL;DR

This study investigates how distractions in mixed reality environments impact user presence, reaction time, and cognitive load, revealing that incongruent distractions notably impair immersion and responsiveness.

Contribution

We developed a theoretical model linking distractions to presence and conducted an empirical study demonstrating their effects on user experience in MR.

Findings

Incongruent distractions increase cognitive load.

Distractions slow reaction times.

Distractions elevate Break in Presence frequency.

Abstract

Distractions in mixed reality (MR) environments can significantly influence user experience, affecting key factors such as presence, reaction time, cognitive load, and Break in Presence (BIP). Presence measures immersion, reaction time captures user responsiveness, cognitive load reflects mental effort, and BIP represents moments when attention shifts from the virtual to the real world, breaking immersion. However, the effects of distractions on these elements remain insufficiently explored. To address this gap, we have presented a theoretical model to understand how congruent and incongruent distractions affect all these constructs. We conducted a within-subject study (N=54) where participants performed image-sorting tasks under different distraction conditions. Our findings show that incongruent distractions significantly increase cognitive load, slow reaction times, and elevate BIP frequency, with presence mediating these effects.