Table S1.

QSU-12 items

Item	Factor
1. Nothing would be better than smoking a cigarette right now	F1
2. Smoking would make me less depressed	F1
3. Smoking a cigarette would not be pleasant*	F2
4. All I want right now is a cigarette	F1
5. Even if it were possible, I probably would not smoke now*	F2
6. I have no desire for a cigarette right now*	F2
7. Smoking now would make things seem just perfect	F1
8. A cigarette would not taste good right now*	F2
9. I have an urge for a cigarette	F1
10. I could control things better if I could smoke right now	F1
11. I am going to smoke as soon as possible	F2
12. I would do almost anything for a cigarette right now	F1

Notes: The French translation of these items can be obtained on request by mail or on the website of the Laboratory for Experimental Psychopathology: http://uclep.be.

^*Reversed items.

Abbreviations: F1, Factor 1: relief of negative affect; F2, Factor 2: intention and desire to smoke; QSU-12, 12-item version of the Questionnaire on Smoking Urges.