In the course of planning a usability test, carefully selecting the tasks and use scenarios that participants will perform is among the most important steps you will take. That said, no matter how meticulously you have selected use scenarios, when it comes time to conduct testing, it all comes down to how you communicate your chosen use scenarios to test participants. This is where a usability test's use scenario prompts come into play, which the moderator might present to participants verbally or in written form.