Based on participants' preference, they were exposed to either a used bong or pipe while sitting alone at a desk. They listened to an audio tape that instructed them to focus their attention on the bong/pipe, smell the bong/pipe, and imagine what it would be like to smoke marijuana out of the bong/pipe. The exposure lasted approximately 2.5 minutes. Participants completed measures of craving and mood before and after exposure to the cue.
