Table 1. Satisfaction/usability survey categories and example items.

Category	Example item
Overall satisfaction	‘’Overall, I am satisfied with this VR meditation programme’.
Perceived usefulness	‘I feel that my stress decreased after the session’.
Ease of use/learnability	‘It was easy to understand how to use the programme’.
Immersion/presence	‘The VR environment felt realistic (sense of presence)’.
Comfort/cybersickness	‘I felt generally comfortable during the session’.
AI coach (Otti) empathy/helpfulness	‘Otti’s feedback made me feel understood’.
Content quality (observation prompts)	‘The prompts helped my observation practice’.
Emotional impact/mindfulness skills	‘The session contributed to my emotional stability’.
Intention to reuse/recommend	‘I would like to use this programme regularly in the future’.