EMA data were collected on a Samsung i200 smart phone using the open source EMA tool MyExperience (Froehlich, Chen, Consolvo, Harrison, & Landay, 2007). Immediately after smoking the last cigarette of the day, participants were trained in the EMA protocol and completed the first momentary assessment. Participants completed 1 additional survey (5 minutes after the last cigarette) in the lab and then carried the device for one day. Participants responded to survey prompts until midnight. At each prompt, current craving, withdrawal, NA, and PA were assessed. All EMA data were time-stamped relative to the last cigarette or waking and were analyzed with respect to the time of assessment. Target assessment points were 0, 5, 15, 30 minutes and then hourly after participants smoked their last cigarette. Upon returning to the laboratory 24 hours later, expired CO readings were collected to verify smoking abstinence and only those with verified abstinence were included in the analyses.
