Stanford University
Anna Grummon
The study aims to determine whether receiving recommendations for healthier or more environmentally sustainable swaps (or both) in an online grocery store environment improves the healthfulness and environmental sustainability of consumers' food and beverage purchases compared to shopping as usual without swap recommendations. The online store will record participants' selections. Participants will also be asked to complete survey measures.
Food Selection
Nutrition
Food Preferences
Dietary Habits
Sustainability
Healthy Diet
Health swaps
Environment swaps
Combined health and environment swaps
Control
NA
Participants will complete an online between-subjects randomized experiment. The experiment will involve three study visits. In the first study visit, participants will complete an online grocery store shopping task without intervention. Participants will be given a budget of $50 and asked to shop as they normally would. The store will record participants' selections. After completing the shopping task, participants will complete an online survey. Approximately one week later, participants will complete a second study visit with the same instructions. They will be randomized to 1 of 4 conditions (1) health only, 2) environment only, 3) combined health and environment, 4) control. In the health only condition, participants will view labels with health grades and may be directed to swap their selections for healthier items. In the environment only condition, participants will view labels with climate impact grades and may be directed to swap their selections for more sustainable items. In the health and environment condition, participants will view labels with health and climate impact grades and may be directed to swap their selections for healthier or more sustainable items. In the control group, participants will not view any labels or swaps. The store will record participants' selections. After completing the shopping task, participants will complete an online survey. In the third study visit, the participants will maintain their assigned group and will be asked to repeat the same tasks as in the second visit.
| Study Type : | INTERVENTIONAL |
| Estimated Enrollment : | 1000 participants |
| Masking : | NONE |
| Primary Purpose : | PREVENTION |
| Official Title : | A Randomized Trial of Food Swaps to Improve the Healthfulness and Environmental Sustainability of Grocery Purchases |
| Actual Study Start Date : | 2024-12-10 |
| Estimated Primary Completion Date : | 2025-04-10 |
| Estimated Study Completion Date : | 2025-05-10 |
Information not available for Arms and Intervention/treatment
| Ages Eligible for Study: | 18 Years |
| Sexes Eligible for Study: | ALL |
| Accepts Healthy Volunteers: | 1 |
Want to participate in this study, select a site at your convenience, send yourself email to get contact details and prescreening steps.
Not yet recruiting
Stanford School of Medicine
Palo Alto, California, United States, 94304