The choices for vending machine customers at Rush University Medical Center in Chicago were clearly marked. Select a snack loaded with calories, sodium, and trans fats, and wait 25 seconds to get it, or opt for something a little more healthy and munch on it right away. It seems that people really don't like to wait. The customers of these experimental machines chose the instant gratification -- and the healthier snacks -- 2 to 5 percent more often than usual. The results of the study, which were unveiled at the 2017 annual meeting of the Society of Behavioral Medicine, could be significant if they were replicated in the 1.3 million vending machines in the United States -- described as the country’s “most prevalent source of high-calorie snacks” in a Rush press release.
Do you really want that candy bar?