Table 1.

Sequence of instructions and cue presentations

Condition	Length	Instructions
Adaptation	3 min	Please relax. You will hear my voice instructing you throughout this assessment.
Baseline 1	2 min	Please sit quietly and relax as you listen to the music. You may close your eyes if you like.
Subjective ratings 1	30 s	On a scale from 0 to 10: • How relaxed are you feeling right now? • How excited are you feeling right now? • How strong is your urge to gamble right now?
Gambling scenario 1	2 min	While directing your attention to the screen in front of you, please visualize the following scene as vividly as you can.
Subjective ratings 2	20 s	On a scale from 0 to 10: • How excited are you feeling right now? • How strong is your urge to gamble right now?
Baseline 2	2 min	Please sit quietly and relax as you listen to the music. You may close your eyes if you like.
Gambling scenario 2	2 min	While directing your attention to the screen in front of you, please visualize the following scene as vividly as you can.
Subjective ratings 3	20 s	On a scale from 0 to 10: • How excited are you feeling right now? • How strong is your urge to gamble right now?
Baseline 3	2 min	Please sit quietly and relax as you listen to the music. You may close your eyes if you like.
Rollercoaster scene	2 min	While directing your attention to the screen in front of you, please visualize the following scene as vividly as you can.
Subjective ratings 4	20 s	On a scale from 0 to 10: • How excited are you feeling right now? • How strong is your urge to gamble right now?
End of assessment	20 s	Thank you. The assessment is now complete. You may now remove the headphones and the heart rate monitor.