About this trial
The study seeks to examine how characters on packaging and warning labels affect purchase intentions and risk perception among children aged 12 to 17 in Colombia and, examine whether characters' presence weakens or reduces the perceived message effectiveness of the warning labels' impact. This will be a 2x2 between-subjects experiment manipulating presence or absence of characters and presence or absence of warning labels. Participants will be randomly assigned to 1 of 4 conditions in an online survey programmed in Qualtrics.
Eligibility criteria
This trial accepts healthy volunteersQualifiers
Children and adolescents between 12 and 17 years old
Colombian residents
Disqualifiers
Children with legal blindness, partial blindness, or total blindness, since the study involves viewing images and reading questions.
Trial design
Factorial
Treatments tested in this trial
Warning label
BehavioralParticipants will view images of three products containing octagonal warning labels.
Barcode control label
BehavioralParticipants will view images of three products containing Barcode control label.
Character
BehavioralParticipants will view images of three products containing characters.
Without character
BehavioralParticipants will view images of three products without characters.
Treatment groups
Trial outcomes
Primary outcomes
Purchase intention
Purchase intention will be assessed using 1 item: "How likely are you to consume this product?" Responses will be recorded on a 5-point Likert-style scale ranging from 1 ("Not at all likely") to 5 ("Very likely"). Because this is a single-item measure, the total score ranges from 1 to 5. Higher scores indicate greater purchase intention, whereas lower scores indicate lower purchase intention.
Risk perception
Risk perception will be assessed using 1 item: "How healthy do you think this product is?" Responses will be recorded on a 5-point Likert-style scale ranging from 1 ("Not healthy at all") to 5 ("Very healthy"). Because this is a single-item measure, the total score ranges from 1 to 5. Higher scores indicate that the product is perceived as healthier (i.e., lower perceived risk), whereas lower scores indicate that the product is perceived as less healthy (i.e., higher perceived risk).
Secondary outcomes
Perceived Message Effectiveness
Perceived message effectiveness will be assessed using 3 items, each measured on a 5-point Likert-style scale (1-5): "How much does this label make you worry about what consuming this product will do to you?" (1 = Not at all worried; 5 = Extremely worried) "How much does this label make you think consuming this product is a bad idea?" (1 = Makes me think it's a very good idea to consume it; 5 = Makes me think it's a very bad idea to consume it) "How much does this label discourage you from consuming this product?" (1 = Doesn't discourage me at all; 5 = Completely discourages me) For each product evaluated, a perceived message effectiveness score will be calculated as the mean of the 3 items, resulting in a score ranging from 1 to 5. Higher scores indicate greater perceived message effectiveness, whereas lower scores indicate lower perceived message effectiveness.
Sponsors and contacts
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University of North Carolina, Chapel Hill
Lead sponsor
The Bloomberg Family Foundation, Inc.
Collaborator
Pontificia Universidad Javeriana
Collaborator
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