Table 3.

Outcome measures-developed self-report items.

Administered	Core aspects that were aimed to be addressed	Example question
Pretrial survey (day 1 only)	Preexisting experience with VRa technology and general attitude toward stress management training	Do you have previous experience with VR technology or headset-based simulation technology, either through personal or professional experience?
Pretraining survey specific for each module	Specific preexisting subject matter knowledge and experience	How often do you engage in controlled breathing to manage your stress response? (M2)
Posttraining survey specific for each module	Personal attitudes and feedback on individual components, perceived relevance, skill acquisition, areas for improvement and perceived benefits	Controlled breathing is a useful and effective way of managing stress (5-point Likert scale, disagree to agree; M2)
Posttrial survey (day 4)	Personal attitudes and feedback on the overall Performance Edge training platform, including acceptance of VR technology and general value to ADFb training	How easy was the use of and navigation within the VR tool?

^aVR: virtual reality.

^bADF: Australian Defense Force.