This exercise will give you practice in applying the think-aloud usability testing techniques presented in Unit 3. Ideally, we would send you out to the world looking for participants for your very own study. You would then get practice at choosing tasks, selecting your target population, writing consent forms, briefing participants, and, most exciting of all, witnessing first hand how diverse and difficult to predict are the thoughts of even a homogeneous population of users. You never know before you test!