Martina has always been annoyed by her roommate, Sara, becau…

Martina has always been annoyed by her roommate, Sara, because Sara never picks up anything in their dorm room. Her laundry is all over the floor and her trash can continually overflows. Even though in every other aspect Sara is a nice and caring person, Martina has decided that she does not like her due to her mesiness. This is an example of the _______ effect.