The internet is overflowing with pictures of food. Many food images are uploaded to sell specific foods. The idea is that the images will make us yearn for a McDonald's burger, for example. New research shows that images can actually have the opposite effect. At least if we see pictures of the same product repeatedly. A number of experiments reveal that we can get a sense of satiety if we see the same image more 30 times. Tjark Andersen, explains more. "In our experiments, we showed that when participants saw the same food picture 30 times, they felt more satiated...