QUESTION 32
Dr. Grayson, a health psychologist, conducts a study examining whether when exposed to pictures of food, people eat more 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 their menu board (about two blocks away from the first
restaurant). She finds that the restaurant that has 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?
It has a high degree of internal validity.
It has a high degree of ecological validity.
It has a high degree of construct validity.
It has a high degree of statistical validity.