ou develop two types of PSAs (Public Service Announcements): one that uses a fear appeal to attempt to scare people into compliance and one that does not. You then show the fear ad to one group of people and the non-fear ad to another group. At the end of the experiment, you ask participants how effective the ad is. In this example, BECAUSE YOU SHOW THE AD TO TWO DIFFERENT GROUPS OF PEOPLE THIS IS A : Between-Subjects Design Within-Subjects Design Factorial Design