This study is about the selection of test groups for a user test. The natural choice for company is to choose people that are included in the target group for the product or system that are about to be tested. This is something I have chosen to focus on. Is there reason to believe that you would choose people to your test group that are not part of the target audience and still produce an equally good result? To learn more about this, a test is conducted on a product that has one focus area and a clear target audience, in this case Snapchat. This research is showing that it’s a difference depending on what people are picked for the test. The two different groups focused on different things in the test that gave different goals to follow.