RESEARCH STUDY 14.3: Dr.Grayson, a health psychologist, conducts a study examining whether people eat more when they are exposed to pictures of food than when they are not exposed to pictures of food.She goes to a fast-food restaurant in downtown Chicago that has pictures of menu items on its menu board and measures the amount of food ordered during the lunch rush (11:30 a.m.-1:30 p.m.) on Tuesday. On Thursday, she does the same thing but at a fast-food restaurant that does not have pictures on its menu board (about two blocks away from the first restaurant). She finds that the restaurant with pictures of food sells more food than the restaurant that does not have pictures. Dr. Grayson wants to conduct her study again, but this time she wants to conduct it in her laboratory. She wants people to feel and act the same way in her laboratory that they would when facing ordering choices in an actual fast-food restaurant. To this end, she must try to enhance which of the following?

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Experimental realism refers to the extent to which an experiment is designed to engage participants and elicit natural behaviors, similar to those in real-world settings. Dr. Grayson wants participants to act as they would in a real fast-food restaurant, so enhancing experimental realism is crucial.