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| ID | Type | Description | Link |
|---|---|---|---|
| R01CA248441 | U.S. NIH Grant/Contract | View source |
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| Name | Class |
|---|---|
| National Cancer Institute (NCI) | NIH |
| New York University | OTHER |
| National Institutes of Health (NIH) | NIH |
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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.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| (Aim 1) Condition 1: Race Congruent Ads | Experimental | Participants will complete a 15-minute survey in which they will be randomized to view and rate Facebook food 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. |
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| (Aim 1) Condition 2: Race Incongruent Ads | Experimental | Participants will complete a 15-minute survey in which they will be randomized to view and rate Facebook food 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. |
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| (Aim 2) Black Many Likes | Experimental | Food ads with many "likes" and featuring Black individuals |
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| (Aim 2) Black Few Likes | Experimental | Food ads with few "likes" and featuring Black individuals |
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Racially Congruent Ads | Behavioral | (Aim 1) Facebook food ads that are racially congruent. |
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| Measure | Description | Time Frame |
|---|---|---|
| Number of Calories Purchased | Aim 1 Participants only. | Day 0 (approximately 15 minutes ) |
| Number of Calories Purchased | Aim 2 Participants only. | Day 0 (approximately 5 minutes) |
| Caloric Intake | Aim 3 Participants only. Number of calories consumed during the study protocol. | 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. | Day 0 (approximately 60 minutes) |
| Visual Attention to Ad Features - Gaze Duration | Aim 3 Participants only. Measured as the gaze duration during the advertisement. | 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. | Day 0 (approximately 60 minutes) |
| Measure | Description | Time Frame |
|---|---|---|
| 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. | Day 0 (approximately 15 minutes ) |
| Time Spent Viewing Ad |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Role | Phone | Extension | |
|---|---|---|---|---|
| Program Manager | Contact | 6465013880 | krystle.tsai@nyulangone.org | |
| Zora Hall | Contact | zora.hall@nyulangone.org |
| Name | Affiliation | Role |
|---|---|---|
| Marie A. Bragg, PhD | NYU Langone Health | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| NYU Langone Health | Recruiting | New York | New York | 10016 | United States |
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| (Aim 2) White Many Likes | Experimental | Food ads with many "likes" and featuring White individuals |
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| (Aim 2) White Few Likes | Experimental | Food ads with few "likes" and featuring White individuals |
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| (Aim 3) Block 1: Black-Food | Experimental | Exposure to ads with a Black person featuring a food product |
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| (Aim 3) Block 2: White-Food | Experimental | Exposure to ads with a White person featuring a food product |
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| (Aim 3) Block 3: Black-Non Food | Experimental | Exposure to ads with a Black person featuring a non-food product |
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| (Aim 3) Block 4: White-Non Food | Experimental | Exposure to ads with a White person featuring a non-food product |
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| (Aim 3) Block 5: Food-Many Likes | Experimental | Exposure to ads with many "likes" featuring a food product |
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| (Aim 3) Block 6: Non Food-Many Likes | Experimental | Exposure to ads with many "likes" featuring a non-food product |
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| (Aim 3) Block 7: Food-Few Likes | Experimental | Exposure to ads with few "likes" featuring a food product |
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| (Aim 3) Block 8: Non Food-Few Likes | Experimental | Exposure to ads with few "likes" featuring a non-food product |
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| Racially Incongruent Ads | Behavioral | (Aim 1) Facebook food ads that are racially incongruent. |
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| Black Ads | Behavioral | (Aim 2 and 3) Food ads that feature Black individuals. |
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| White Ads | Behavioral | (Aim 2 and 3) Food ads that feature White individuals. |
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| Many Likes | Behavioral | (Aim 2 and 3) Food ads that have many "likes" |
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| Few Likes | Behavioral | (Aim 2 and 3) Food ads that have few "likes" |
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| Black-Non Food | Behavioral | (Aim 3) Ads featuring a Black person with a non-food product |
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| White-Non Food | Behavioral | (Aim 3) Ads featuring a White person with a non-food product |
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| Non Food-Many Likes | Behavioral | (Aim 3) Ads with Many "likes" featuring a non-food product |
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| Non Food-Few Likes | Behavioral | (Aim 3) Ads with Few "likes" featuring a non-food product |
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Aim 1 Participants only. |
| 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. | 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. | Day 0 (approximately 5 minutes) |
| ID | Term |
|---|---|
| D005518 | Food Preferences |
| ID | Term |
|---|---|
| D005247 | Feeding Behavior |
| D001519 | Behavior |
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