David Vanata from Ashland University in Ohio gave 240 young adults a list of 62 foods and asked them to rank each food on happiness, excitability, pleasantness, and comfort. The results: Highest happiness scores: ice cream, chocolate, cake, grapes, and pizza Lowest happiness scores: tofu, soy, avocado, bologna, and salmon Highest pleasantness and excitability scores: Similar to the happiness list, but cookies also ranked high Lowest pleasantness and excitability scores: Similar to the happiness list, but cauliflower joined the list Highest comfort scores: chocolate, ice cream, grapes, spaghetti, macaroni, apple, and orange