XR Design for Shared Memory Reconstruction: Investigating Interaction Models for Co-Constructed Memory in XR

<p dir="ltr">This thesis explores how extended reality (XR) can support the reconstruction of shared memories by embracing their fragmented, emotional, and multi-perspective nature. Rather than treating memory as a fixed archive, this research reframes memory as a dynamic and socially constructed process-one that evolves over time through reinterpretation and interaction. </p><p dir="ltr">Building on research in cognitive psychology, social memory theory, and human-computer interaction, the project focuses on three core factors influencing memory reconstruction: emotional and cognitive dynamics, contextual and environmental cues, and interactive co-construction. These factors informed a two-phase study: a collaborative memory mapping workshop and the development of a point cloud-based XR system. </p><p dir="ltr">The XR system enables users to generate immersive memory environments, contribute personal memory fragments, and explore other participants' recollections through spatial, timeline-based, and perspective-switching interactions. </p><p dir="ltr">User testing demonstrates the system's ability to foster emotional engagement, enhance narrative understanding, and strengthen social connection through multi-perspective memory reconstruction. By translating memory theory into interactive design strategies, this work advances a design framework for memory reconstruction-one that supports ambiguity, reflection, and co-creation.</p>