2,184
Participants
Start Date
August 7, 2023
Primary Completion Date
August 7, 2023
Study Completion Date
August 7, 2023
Exposure to counter-marketing messages
Counter-marketing messages about sugary drinks that incorporate principles of effective counter-marketing campaigns, including describing industry manipulation of consumers, appealing to emotions (especially anger), describing health consequences, and criticizing the industry for demographic targeting. Messages include text adapted from prior counter-marketing campaigns. Participants will view a total of 4 messages developed for this arm.
Exposure to traditional health messages
Traditional health messages focused on the health consequences of sugar-sweetened beverage consumption, using text adapted from prior sugary drink campaigns. Participants will view a total of 4 messages developed for this arm.
Exposure to control (neutral) messages
Control messages approximately matched to the intervention messages on length, but discussing a neutral topic unrelated to sugary drinks (safe driving). Participants will view a total of 4 messages developed for this arm.
Stanford School of Medicine, Palo Alto
Harvard Pilgrim Health Care
OTHER
Stanford University
OTHER