TAILIEUCHUNG - Thiết kế trải nghiệm người dùng iphone - p 22

Như đã đề cập trước đó, nó là quan trọng để chạy một phiên thí điểm để tìm ra bất kỳ vấn đề với các mẫu thử nghiệm hoặc hướng dẫn thảo luận. Ngoài việc tuyển dụng người tham gia dựa trên hồ sơ của bạn, bạn có thể muốn làm một thử nghiệm chạy với một thành viên trong nhóm không quen với các thiết kế ứng dụng. | As mentioned earlier it s critical to run a pilot session to uncover any issues with the prototype or discussion guide. In addition to recruiting a participant based on your user profile you may want to do a test run with a team member unfamiliar with the app design. Be sure to run the pilot at least a few days before the actual study that way you ll have enough time to make revisions. Facilitating Usability Tests The discussion guide will be instrumental as you facilitate the usability-testing sessions. As mentioned previously remember it s a guide thus you should adapt as needed. At the same time it s important to know when to draw participants back into the guide. For example the art events app prototype did not include a companion web site. However when a participant asked about the web site it seemed worth exploring so we discussed this topic further. NOTE Tasks can be provided orally written on paper or both. I tend to provide both. In contrast when another participant started to discuss a feature that was clearly out of scope I noted the comments and politely moved on to the next task. Additional facilitating tips are discussed in the next section. BE ENCOURAGING After presenting users with each task remain quiet giving them a chance to orient themselves. Resist any temptation to provide hints or explain what to do next. Provide encouraging verbal and nonverbal feedback such as nodding and smiling. ASK OPEN-ENDED QUESTIONS As participants are working through tasks you may ask open-ended questions to better understand their behavior and comments. Open-ended questions are also an effective way to help participants when they seem confused. Here s an example of this type of dialogue Participant Quietly staring at screen Moderator What are you thinking 178 CHAPTER 8 USABILITY-TESTING APP CONCEPTS Download from Participant Well I was going to tap here but I m not sure if it will show more event info. Moderator What do you expect it to do .

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