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DoubleTake: Effect of Message Exposure Via a Discrete Choice Experiment With Eye-Tracking on Quit Attempts Among Adults Who Smoke Menthol Cigarettes

The DoubleTake Study: A Randomized, Waitlist-Controlled Trial of Message Exposure Delivered Via a Discrete Choice Experiment With Eye-Tracking on Quit Attempts Among Adults Who Smoke Menthol Cigarettes

Who can join

Ages 21 and older · All sexes · Healthy volunteers welcome

Inclusion Criteria:

* Age 21+ years
* Smoked menthol cigarettes at least once a week in the past 30 days
* Can speak, read, and write in English
* Willing to participate in an in-person study

Exclusion Criteria:

* Eye conditions affecting fixation, ocular motility, or central acuity (e.g., strabismus, nystagmus, ptosis, aniridia, maculopathy, advanced cataracts, or other conditions affecting macular fixation or central visual acuity).
* Multifocal or near-infrared-blocking/heavily tinted corrective lenses: bifocal, trifocal, or progressive/varifocal lenses, or coatings that impair eye-tracking. (Single-vision glasses and contact lenses are eligible.)

About the study

\<p\>The goal of this clinical trial is to learn how exposure to anti-smoking social media messages affects quitting-related behaviors. Eligible participants will be adults aged 21 or older who have used menthol cigarettes on at least 4 days during the past 30 days.\</p\> \<br\> \<p\>The main question this study aims to answer is: Does exposure to anti-smoking messages (in the context of a discrete choice experiment \[DCE\] with eye-tracking study) increase quitting-related behaviors over the following 2 weeks?\</p\> \<br\> \<p\>Participants will be randomly assigned to view the messages either immediately or after a 2-week waiting period, allowing researchers to compare quitting-related behaviors between the two groups. The primary outcome is whether participants report making a quit attempt in the 2 weeks following randomization.\</p\> \<br\> \<p\>Participants will:\</p\> \<ul\> \<li\>Complete eligibility screening and baseline questions about demographics and tobacco use.\</li\> \<li\>Be randomly assigned to view the messages immediately or after a 2-week waiting period.\</li\> \<li\>Attend a 1-hour in-person study visit at Georgia State University or the University of California, Santa Barbara.\</li\> \<li\>View 64 anti-smoking social media messages presented in 16 choice sets while their eye movements and pupil dilation are measured using a screen-based eye-tracking device.\</li\> \<li\>Select which messages most attract their attention, which they would be most likely to share, and which would most motivate them to quit smoking.\</li\> \<li\>Complete questions about quitting-related behaviors either during the study visit (waitlist control condition) or through an online questionnaire 2 weeks later (immediate condition).\</li\> \</ul\>

What is being tested

• Message Exposure via Discrete Choice Experiment (behavioral)

Sponsor: Georgia State University · Participants: 200 · Started: Sep 21, 2026

Contact the study team

• Lyudmila Popova, Ph.D · Phone: 404-413-9338

Official record on ClinicalTrials.gov — NCT07782879

Locations in the U.S.

Conditions

• Smoking and Youth

From ClinicalTrials.gov, data retrieved Oct 2, 2026. Each study sets its own eligibility; the study team decides who can join.