Dietary and Cognitive Effects of Food Ads Posted by TikTok Influencers

Study Overview
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Brief Summary
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Randomized and controlled experimental study to evaluate how influencer food ads on TikTok affect calorie purchases among youth (ages 10-13). Participants will be randomized to one of two conditions: (1) seeing an influencer with food or (2) seeing an influencer without food. Participants will complete a 15-minute survey in which they will be randomized to one of two conditions and view and rate TikTok influencer ads associated with their condition. Then they will complete a food purchasing task in which they will shop in an online store that will display six food items and six beverages. Finally, they will answer demographic questions (e.g., self-reported height and weight) and view a debriefing summary that describes the full purpose of the study.

Official Title
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A Randomized Controlled Trial Examining How TikTok Influencers' Posts With Vs. Without Food Differentially Affect Youth Dietary Choices

Conditions
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Calorie Consumption

Intervention / Treatment
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* Behavioral: TikTok Ads - With Food
* Behavioral: TikTok Ads - Without Food


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Participants must be 10-13 years old Identify as only non-Latino White or only Black/African American Report that they log into TikTok at least once daily Read and speak English Exclusion Criteria: • Any criteria not met as listed above will bar an adolescent from participating in the study

Ages Eligible for Study
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Minimum Age: 10 Years
Maximum Age: 13 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Prevention
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: TikTok Influencer Ads with Food<br>Participants randomized to view TikTok influencers' posts with food will view 4 ads associated with their condition and 2 filler ads, all of which are presented in counterbalanced order. They will report their reaction to the ads using the icons available on the TikTok platform (i.e. like, comment, or share). After viewing all of the TikTok ads, youth participants will complete the virtual snack selection task where they will see a virtual vending machine. All items will cost $2. Participants will be asked to select one snack and one beverage from the vending machine. After the snack selection task, participants will review the TikTok ads again and complete survey questions. | Behavioral: TikTok Ads - With Food<br>* TikTok posts from influencers promoting food.<br>|
| Experimental: TikTok Influencer Ads without Food<br>Participants randomized to view TikTok influencers' posts without food will view 4 ads associated with their condition and 2 filler ads, all of which are presented in counterbalanced order. They will report their reaction to the ads using the icons available on the TikTok platform (i.e. like, comment, or share). After viewing all of the TikTok ads, youth participants will complete the virtual snack selection task where they will see a virtual vending machine. All items will cost $2. Participants will be asked to select one snack and one beverage from the vending machine. After the snack selection task, participants will review the TikTok ads again and complete survey questions. | Behavioral: TikTok Ads - Without Food<br>* TikTok posts from influencers who are not promoting food.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Calorie Count from Snacks Chosen at Virtual Vending Machine |  | Day 1 |