Choice Behavior, Dietary Habits
Conditions
Brief summary
In this study, participants at six different academic events were randomly assigned to one of two conditions: (1) a default meat group, where the default choice was a meal with meat and participants had the option of opting out and choosing a plant-based meal; and (2) a default veg group, where the default choice was a plant-based meal with the option of opting out and choosing a meal with meat. Based on the success of prior studies that implemented plant-based defaults through preselection, we hypothesized that more participants would choose the plant-based meal when that option was set as the default, and we hypothesized that the default intervention would be equally effective across academic institutions. We also hypothesized that the default intervention would be equally effective across demographic groups, which would help to further demonstrate the generalizability of our plant-based default intervention.
Interventions
BEHAVIORALDefault Veg
Received a plant-based meal as the default option on the event RSVP form that required participants to pre-select their meal choice
BEHAVIORALDefault Meat
Received a meal with meat as the default option on the event RSVP form that required participants to pre-select their meal choice
Sponsors
Arizona State University
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
SINGLE (Subject)
Eligibility
Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
Yes
Inclusion criteria
* Academic event attendee
Exclusion criteria
* None
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Proportion of participants selecting the plant-based meal | Immediately during the completion of the event RSVP form | The percent (%) of participants selecting the plant-based meal option instead of the meal with meat option on the event RSVP from |
Countries
United States
Outcome results
None listed