Dr Grayson, a Health Psychologist, Conducts a Study Examining Whether

Multiple Choice

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.
Because Dr. Grayson conducted her study in a field setting, which of the following is an advantage of her study?

A) It automatically generalizes to other situations (e.g., fancy restaurants, cafeterias) .
B) It automatically generalizes to other people.
C) It removes all threats to internal validity.
D) It has a high degree of ecological validity.