Researchers at Iowa State University say that visual reinforcement could drastically increase the number of children that who healthfully, according to this Iowa State News Service article. Laura Smarandescu, assistant professor of marketing, and Brian Mennecke, associate professor of information systems, conducted a study of children, age 6 to 12, at a camp for children with diabetes. Campers were shown their meal options on a digital display, and the study found that salad consumption increased as much as 90 percent when the display showed a rotating image of salad. The results led the researchers to believe that a digital display in schools could motivate students to make healthier choices.