Nudge theory describes how indirect suggestions and positive reinforcement can influence decision-making. We used nudge theory to implement a traffic-light labeling and choice architecture (modifying product placement) intervention at Harvard University cafeterias, but found no significant change in sales. Survey and focus group data showed that…

Competitive foods in schools have historically been scrutinized for their ubiquity and poor nutritional quality, leading many states to enact legislation limiting the availability and accessibility of these items. Evaluations of these policy approaches show their promise in improving the healthfulness of school food environments, considered an…