Investigating Whether the Mass of a Tool Replica Influences Virtual Training Learning Outcomes

Mon, 01 Jan 2024 00:00:00 +0000

Why this matters

Instrumenting a real tool for Virtual Reality training often changes its mass. This study asks whether that physical mismatch compromises what matters most: the learner’s ability to perform the gesture afterwards in real conditions.

Study at a glance

Eighty participants completed a three-stage protocol: a real pre-training assessment, immersive training with a tracked replica, then a real post-training assessment. The experience covered three gestures with a one-handed rotary tool: cutting, drilling, and sanding.

The original tool weighed 624 g. The three replica conditions were balanced and weighted to 312 g (50%), 624 g (100%), and 936 g (150%). The study combined real-task performance measures with cognitive load, usability, and perceived-learning questionnaires.

Main result

Across the tested conditions, learning outcomes remained comparable despite the changes in replica mass. Participants also improved on selected real-task measures, including task-completion time. Within the 300–900 g range and for these tasks, replica mass was therefore not a decisive factor for the measured learning outcomes.

This result gives designers practical room to accommodate tracking and fabrication constraints—but it should not be overgeneralised to heavier tools, highly precise gestures, or tasks that require stronger proprioceptive or haptic feedback.

Immersive training | Étienne Peillard

Investigating Whether the Mass of a Tool Replica Influences Virtual Training Learning Outcomes

Why this matters

Study at a glance

Main result