The present project will evaluate the initial efficacy of approach bias retraining among dual combustible cigarette (CC) and electronic cigarette (ECIG) users. The study employs a randomized controlled design to follow 90 experienced dual CC/ECIG users motivated to quit nicotine as they engage in a self-guided quit attempt following approach bias retraining.

The study employs a randomized controlled design to follow 90 experienced dual CC/ECIG users motivated to quit nicotine as they engage in a self-guided quit attempt following approach bias retraining. Participants will be randomized to one of three approach bias retraining conditions: (1) CC+ECIG; (2) CC only; or (3) sham (control). Participants will complete a phone pre-screener, baseline (week 1 of study participation), 4 approach bias retraining sessions in laboratory (with quit day scheduled for the 4th session; weeks 2-5 of study participation), and follow-up assessments at 4- and 6-weeks post-intervention (i.e., weeks 9 and 11 of study participation, respectfully). Participants also will complete ecological momentary assessments (EMA) of CC smoking, ECIG use, and CC and ECIG urges/cravings for 14 days post-intervention (i.e., weeks 5-7 of study participation) on Internet capable smartphones. The only time data will be collected is when participants complete EMA assessments or follow up surveys using the REDCap app on the smartphone.

Inclusion Criteria:

• At least 18 years of age
• At least 15 days of CC use for the previous month
• ECIG use with nicotine at least 15 days for the previous month
• Motivation to quit nicotine (BOTH CC and ECIG; ≥ 5 on a 0-10 scale)
• Ability to speak and read English fluently
• Not have decreased number of cigarettes by more than half in the past month
• Own an android smartphone (for EMA).

Exclusion Criteria:

• Current psychotherapy or pharmacotherapy for mental illness or addiction
• Current use of nicotine replacement therapy, Zyban, or Chantix
• Limited mental capacity or inability to provide informed consent
• Insufficient command of the English language (>6th grade English literacy level required)

We will provide de-identified data from this project to interested individuals one year following achievement of the aims of the project (i.e., publication of the main outcome paper). These data will be provided in digital format (i.e., disk) with clear labels for all variables. Data will be released directly by the investigators providing evidence of their institution's IRB approval for planned analyses of the data. Our team will be available to address queries.

One year after completion upon request.

Upon specific IRB approval and request from researchers.