The collaboration in co-located shared environments has sparked an increased interest in immersive technologies, including Augmented Reality (AR). Since research in this field has primarily focused on individual user experiences in AR, the collaborative aspects within shared AR spaces remain less explored, and fewer studies can provide guidelines for designing this type of experience. This article investigates how the user experience in a collaborative shared AR space is affected by divergent perceptions of virtual objects and the effects of positional synchrony and avatars. For this purpose, we developed an AR app and used two distinct experimental conditions to study the influencing factors. Forty-eight participants, organized into 24 pairs, participated in the experiment and jointly interacted with shared virtual objects. Results indicate that divergent perceptions of virtual objects did not directly influence communication and collaboration dynamics. Conversely, positional synchrony emerged as a critical factor, significantly enhancing the quality of the collaborative experience. On the contrary, while not negligible, avatars played a relatively less pronounced role in influencing these dynamics. The findings can potentially offer valuable practical insights, guiding the development of future collaborative AR/VR environments.

翻译：在共置共享环境中的协作激发了对增强现实等沉浸式技术的日益关注。由于该领域研究主要集中在单个用户在增强现实中的体验，共享增强现实空间中的协作方面仍较少被探索，且鲜有研究能为这类体验的设计提供指导。本文探讨了协作共享增强现实空间中用户体验如何受虚拟对象感知差异、位置同步性以及虚拟化身的影响。为此，我们开发了一款增强现实应用，并采用两种不同的实验条件来研究影响因素。48名参与者（组成24对）参与实验，共同与共享虚拟对象进行交互。结果表明，虚拟对象的感知差异并未直接影响沟通与协作动态。相反，位置同步性作为关键因素显著提升了协作体验质量。此外，虚拟化身虽非可忽略因素，但在影响这些动态方面作用相对较小。研究结果可为未来协作增强现实/虚拟现实环境的开发提供有价值的实践指导。