Questions used to guide the semi-structured interview

- Q1.1:What object did you imagine to represent the negative thought?
- Q1.2: How is each visual property related to your negative thought?
- Q2: How well were you able to imagine (mental-imagery group) or express (VR group) the thought at a scale of 1-5 (1:Not well at all, 5:Very well)
- Q3.1: How much important is each visual property to represent your target negative thought at a scale of 1-5 (1:Not important at all, 5:Very important)?\
- Q3.2: How much important is each visual property to help you feel separated from your target negative thought at a scale of 1-5 (1:Not important at all, 5:Very important)?
- Q3.3: How much acceptance did you feel when you transport the object?
- Q4: Did you encounter any difficulties during the intervention?