International Journal of Cognitive Sciences · Sep 23, 2026
Validity of a Novel Head-Mounted Display Augmented Reality Device with a Body-Worn Accelerometer (HMD-WRIT) and Dynamic Executive Function Assessment Against Standardized Tests in Healthy Older Versus Young Adults
By Buskirk JK
Background: Neurologic pathologic conditions, including traumatic brain injury (TBI), and natural aging often present with concurrent physical and cognitive challenges. While functional physical capabilities may be accurately and reliably assessed, traditional cognitive measures rely on static testing methods that fail to incorporate functional movements. Objective: These two studies aimed to validate a novel portable version of the previously validated laboratory-based Walking Response and Inhibition Test (WRIT), utilizing a head-mounted device (HMD) and a body-worn position sensor for dynamic measure of Executive Function (EF) during functional mobility. Methods: Two observational studies were conducted across cohorts of healthy older and younger adults. To validate the portable device (HMD-WRIT), participant performance was benchmarked against two 3D Motion Analysis Systems. Additionally, a healthy elderly cohort study compared three standardized cognitive tests, while both studies utilized a functional mobility test. Results: Data from both observational studies demonstrated that the portable HMD-WRIT accurately captured postural responses to visual commands during walking. Performance metrics successfully correlated with motion-capture data and established static cognitive benchmarks. Conclusions: The HMD-WRIT is a viable, portable option for measuring EF during functional movement. This system bridges the gap between static cognitive testing and real-world mobility assessments in both young and aging populations.