Rigour Meets (Virtual) Reality

Balancing Robust Methodology and Real-World Implementation in a VR-Therapy Protocol for At-Home Dementia Care

Abstract

Caregivers of people living with dementia (PLwD) experience substantial psychosocial burden, compounded by limited access to formal respite due to financial, geographic, and systemic barriers. Immersive virtual reality (VR) shows promise for alleviating behavioural and psychological symptoms of dementia while supporting caregiver respite. However, current VR studies are often constrained by restrictive eligibility criteria, high participant burden, and selective outcome measures that fail to capture routine use in practice. This paper offers methodological commentary on the VR&R study protocol, a 6-week randomized crossover trial comparing Solo-VR and Social-VR delivery in 50 caregiver–PLwD dyads. The primary outcome is respite, assessed as both objective time away from caregiving and subjective quality, along with secondary outcomes related to caregiver and PLwD well-being. Feasibility, accessibility, and implementation considerations were integrated alongside rigorous methodological features including randomized crossover allocation, mixed-methods evaluation, standardized outcome measures, and objective usage data, informed by advisors, community partners, and people with lived caregiving experience. Key adaptations included eligibility criteria based on functional capacity and assent, expanded caregiver definitions, flexible home-based delivery, and low-burden measures. By combining outcome evaluation with delivery models that reflect everyday care conditions, this study examines not only whether VR can support respite, but also how delivery models and intervention design shape its impact, uptake, and applicability in dementia care.