Dual Use of ENDS and Combustible Cigarettes

In the cue-reactivity task, participants will be exposed to either a combustible cigarette or e-cigarette cue (within-subjects randomized order across laboratory sessions) and a neutral water bottle cue. Participants will report their craving for cigarettes and e-cigarettes.

In the computerized visual dot probe task, participants will view a series of substance (cigarette or e-cigarette by trial block) versus neutral (water bottle) image trials and then respond to a subsequent image presented behind either the neutral or substance image. Order of block presentation within the task is randomized within-subjects across study sessions (i.e., cigarette OR e-cigarette block first).

In the choice task, participants will choose between smoking their usual brand cigarette or their own e-cigarette over ten sequential ad-libbed trials.