Cognitive and Emotional Skills to Aid Smoking Cessation

This study is targeting adult smokers in the greater Boston community who are interested in entering smoking cessation treatment. This study will employ a block randomization of 74 smoking participants to one of two intervention conditions: (1) a control condition offering the 5-session standard, smoking cessation program (SCP) plus a wellness component, (2) a treatment condition offering the 5-session SCP, a motivational enhancement component, and working memory training.

Research assessments will consist of participant self-reports of smoking behavior and proximal smoking measures (e.g., cravings) as well as self-report of personality characteristics (e.g., sensation seeking) associated with risk behaviors. CO exhalations will also be evaluated to confirm non-smoking status. Subjects will wear a wrist worn wearable sensor to monitor their physiological data and physical activity. The sensors will measure heart rate, inter-beat interval, electrodermal activity, skin temperature and acceleration signal arising from body movement. Once the data is collected, it will be statistically analyzed and machine learning techniques used to determine if specific physiological and behavioral markers precede smoking behavior (ex fidgeting). In addition, each participant's intervention session attendance and engagement will be recorded by the therapist. Participants in both conditions will make their quit attempt prior to the 5th and final intervention session, and will be invited to return for a follow-up visit at 1 week, 2 weeks, and 1 month after completing the final session, at which time their smoking status and related outcomes will be re-assessed.

Participants who miss more than 50% of intervention sessions will be considered off-protocol, but will remain in the study.

Participants will be randomly assigned to 1 of 2 study conditions. Each intervention is to be delivered over five consecutive weeks. Interventions will be led by Master's- or Doctoral-level study clinicians with ongoing supervision from Dr. Otto. For the working memory training component of the enhanced treatment condition, a computerized training program will be utilized.

All interventions will be delivered in groups with variable group size (1-8 members). Each of the study interventions is to be delivered once per week over five consecutive weeks. Therapy components of the sessions will be 60 minutes in length. Sessions may last, in total, up to 2.5 hours. Between intervention sessions, participants will also be asked to complete homework to practice skills learned during each session.

The first half of each intervention session (across randomized conditions) will consist of material adapted from the Smoking Cessation Program (SCP)-a standard, manualized cognitive behavioral therapy-based intervention for individuals interested in quitting smoking. The program, administered by a trained interventionist, combines empirically validated smoking and relapse prevention techniques. Specific goals of the sessions include targeting barriers to smoking cessation, enhancing self-confidence/preparedness for quitting smoking, and positive lifestyle changes.

Enhanced Intervention Condition

During the second half of each intervention session, participants in the Enhanced Intervention condition will complete 45 minutes of computerized working memory training, adapted from the Cogmed QM program. Participants in this condition will also be asked to use the program a few times a week for 25-35 minutes between sessions,remotely on a home computer or at a computer provided at the BU Translational Research Program lab (to ensure all participants have adequate access to the program). The CogMed QM program has been shown to produce higher effect sizes than other programs including noncommercial programs developed by researchers for the purposes of their studies. It resembles a video game, and comprises several different "games" that require visuo-spatial working memory (remembering the position of objects) and a combination of verbal and visual working memory (remembering phonemes, letters, and digits). The program adapts to the user's performance. If the trainee is doing well, the to-be-remembered list will increase by one item. If the trainee is struggling, the to-be-remembered list will decrease by one item. Accordingly, trainees are able to perform at the limit of their ability, stimulating WM capacity adaptation.

Before and after completing their weekly CogMed QM working memory training task, participants will be asked to reflect on their long-term goals for quitting smoking, using guided imagery about future smoking/non-smoking life status as well as open-ended exploration of the perceived advantages and disadvantages of smoking versus quitting. Participants will be informed of the hypothesized role of working memory training as an exercise to help them keep their long-term goals in mind when cravings and temptations arise, and will be encouraged to use the skills they are practicing during the working memory exercise to help them resist temptations to smoke.

Control Intervention Condition

This control informational intervention has been used in the primary investigator's and other's previous studies. In the current application, it will match the session time of the working memory training and motivational enhancement components in the Enhanced Intervention Condition, and will consist of discussions of a variety of healthy lifestyle topics, such as healthy eating, stress/time management, and recommended health screenings (excluding discussion of smoking, which will be addressed during the SCP component that is common to both intervention conditions).