Figure 8-4. Portion of prototype screen from the rehabilitation study Create solution-interview questions that will encourage participants to think through your solutions and other alternatives; they might have insight into making your product better. Again, don’t create or ask leading questions. Conversely, don’t put participants on the spot by forcing them to brainstorm in front of you. Give them options of familiar mental models that will give the solution prototype context. Be open-ended initially with the questions, and then give enough hints and prompts to validate the solution. Following are the solution questions for one of the key experiences (see also Figure 8-5). You might also have to contextualize the screen for the users before asking them any questions. Screen 1: What do you think is going on in this screen? Screen 2: What do you think all these pull-down options mean? (Go through each one.) Screen 2: What do you think the ratings are based on? Screen 3: This is the listing page with information about the rehabilitation center. What do you think is going on here? Screen 3: What do you think of the “Apply Now” button? Where do you think it will take you? Screen 3: You might have noticed that we don’t display the treatment centers’ actual names. Would that be an issue for you? Screen 3: Would you be comfortable applying to this facility without contacting it first?