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Scanning task design. Schematic illustration of a single trial. Each trial began with a 2500-ms long instruction (LOOK or MINDFULLY ATTEND or REAPPRAISE), followed by a jittered interval. A photo was then presented onscreen for 8000 ms (neutral, negative or smoking). Subsequently, participants were asked to rate the strength of their craving and negative affect. Trials were separated by a 2000-ms intertrial interval.
