This is a Master ClinicalTrials.gov Protocol for study 20-01796: Aim 1: Examining Influence of Social Media Ads on Black and White Adolescents' Food Choices - Study 1 (NCT05380505) Aim 2: A Randomized Trial to Examine the Influence of "Likes" in Social Media Food Ads on Black and White Adolescents' Food Purchases - Study 2 (NCT06969638) Aim 3: Comparing the Effects of Racial Congruence, "Likes," and Food Images in Social Media Ads on Adolescents' Caloric Intake - Study 3 (NCT06969651)
The overall objective is to determine the extent to which racially congruent Facebook food ads influence adolescents' food purchases and actual caloric intake. The investigators are conducting three randomized controlled trials (RCTs). The first two aims involve 15-minute online surveys in which participants (Black and White adolescents) rate ads then complete a "food purchasing" task through a virtual vending machine. The third trial will involve an in-person, hour long lab study where participants will be shown ads while investigators covertly monitor their eye movements.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
PREVENTION
Masking
DOUBLE
Enrollment
3,650
(Aim 1) Facebook food ads that are racially congruent.
(Aim 1) Facebook food ads that are racially incongruent.
(Aim 2 and 3) Food ads that feature Black individuals.
(Aim 2 and 3) Food ads that feature White individuals.
(Aim 2 and 3) Food ads that have many "likes"
(Aim 2 and 3) Food ads that have few "likes"
(Aim 3) Ads featuring a Black person with a non-food product
(Aim 3) Ads featuring a White person with a non-food product
(Aim 3) Ads with Many "likes" featuring a non-food product
(Aim 3) Ads with Few "likes" featuring a non-food product
NYU Langone Health
New York, New York, United States
RECRUITINGNumber of Calories Purchased
Aim 1 Participants only.
Time frame: Day 0 (approximately 15 minutes )
Number of Calories Purchased
Aim 2 Participants only.
Time frame: Day 0 (approximately 5 minutes)
Caloric Intake
Aim 3 Participants only. Number of calories consumed during the study protocol.
Time frame: Day 0 (approximately 60 minutes)
Visual Attention to Ad Features - First Fixation
Aim 3 Participants only. Measured as time to first fixation to the advertisement.
Time frame: Day 0 (approximately 60 minutes)
Visual Attention to Ad Features - Gaze Duration
Aim 3 Participants only. Measured as the gaze duration during the advertisement.
Time frame: Day 0 (approximately 60 minutes)
Visual Attention to Ad Features - Number of Fixations
Aim 3 Participants only. Measured as the number of fixations on ad features.
Time frame: Day 0 (approximately 60 minutes)
Attitude Toward Ad
Aim 1 Participants only. Attitude will be reported on a Likert scale of 1 to 100 (1 = likeable, 100 = unlikeable). The higher the score, the less likeable the ad is to the participant.
Time frame: Day 0 (approximately 15 minutes )
Time Spent Viewing Ad
Aim 1 Participants only.
Time frame: Day 0 (approximately 15 minutes )
Attitude Toward Ad
Aim 2 Participants only. Attitude will be reported on a Likert scale of 1 to 100 (1 = likeable, 100 = unlikeable). The higher the score, the less likeable the ad is to the participant.
Time frame: Day 0 (approximately 5 minutes)
Engagement with Ads
Aim 2 Participants only. Participants indicate in which ways, if any, they would engage with each ad by answering the following question: "How you would respond if you saw this ad on social media"? \[Select all that apply: "Like" \[heart icon and other emojis\], comment, tag a friend, direct message a friend, re-post, none of the above\]). The outcome is measured as the number of participants who indicate they would engage with ads.
Time frame: Day 0 (approximately 5 minutes)
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