Overview: Our basic need and desire for food has made the supermarket one of the great success stories of modern retailing. Making customers' visits to the market as efficient as possible has led to bar coding and a scale that recognizes the type of produce placed on it. Explore the psychology of the supermarket including store layout, lighting, music and aromas that trigger the appetite. With a growing percentage of the public interested in eating healthier foods, organic grocers are carving out an increasingly large niche.