While schools in the United States are providing healthier food options in their cafeterias as part of a federal initiative, getting kids to put more nutritious items on their plate can be a challenge. Researchers have found that adding a smiley face label to healthy foods such as fruits and vegetables or adding a small prize to a plate of four healthy foods resulted in a 62% rise in vegetable servings and a 20% increase in fruit servings on student trays.
Pediatric Academic Societies, April 2015