Procedures
After participants reviewed consent instructions and provided electronic informed consent via the survey they were instructed to complete 2 online vending machine selection tasks: one for beverages and one for snacks, in random order. We focused on vending machine selections to allow comparison with the author team’s field experiment,To minimize social desirability bias and incentivize participants to select items that they wanted to receive, participants were told that 100 participants would be randomly chosen to have their selections delivered. In reality, these participants received a $2.50 gift card (more than the amount of the most expensive product); participants were debriefed on this procedure and could request that their data be removed. Participants were prompted (but not required) to select a product in each selection task. After completing the tasks, participants responded to survey questions.