Table 3.

Think-aloud results for tasks 2-6.

Task	Usability issue	Description	Example
Task 2: Select activity	Understanding instructions	Users had difficulty understanding that they should select an activity that they were having difficulty with because of their health.	“Like gardening, I’m not that thrilled about gardening and I’m not very good at it. Would that be considered one, or no?” (User 7) “It’s asking for an activity you are having difficulty doing because of your health.” (RCa) “Oh, I’m sorry. I didn’t even think of that. Ok, because of my health.” (User 7)
Task 3: Rate activity and set goal	Understanding instructions	Users had difficulty determining how many modules they should select.	“So, you want me to pick just one?” (User 5) “No, you can pick as many as you would like.” (RC)
Task 4: Open activity	Navigation	Users did not realize that they needed to click on the icon to open the activity.	“So, we’ve done that...I don’t see a ‘next’ to click on, so what should we do about that? How do we move on?” (User 1)
Task 5: Select self-management module	Navigation	Users had difficulty locating the self-management modules on the page.	“That’s this, right? That’s what this is?” (User 3) “So, that’s to create an action plan…” (RC) “Oh, over here. Oh, ok. So that’s the module.” (User 3)
Task 5: Select self-management module	Understanding instructions	Users had difficulty with the instructions because they had the option to explore the topics or complete the self-assessment.	“So I’m not really sure here.” (User 5) “So based on the information you read...” (RC) “Complete the self-assessment, it says. So I guess they want me to do this, right?” (User 5)
Task 6: Complete self-assessment	Navigation	Users suggested that the recommendation provided by the system after completing the self-assessment did not provide adequate direction to help navigate to the next task.	“So, should I go back to self-assessment? This is the same page as before, right? I don’t understand where I go from here.” (User 7)
Task 6: Complete self-assessment	Understanding instructions	Users had difficulty following the instruction to complete the self-assessment. Some were drawn to the “Not sure what to do next” box and the instruction to create an action plan instead.	“Ok, ‘Start by completing the self-assessment. Based on your answers, you will receive a recommendation to guide you in selecting the topics below that will help you the most.’ Ok, so this is what I’ve got to do, create a 7 Day Action Plan for your goal.” (User 11)
Task 6: Complete self-assessment	Layout	Users had difficulty finding the self-assessment button.	“But if the instruction says ‘Start by completing the self-assessment’, can you see on the page where that might be?” (RC) “Right here. So [the button] is not in a place that I would have thought to look. It’s in a place where I think to not pay attention.” (User 11)
Task 6: Complete self-assessment	Workflow	Users suggested that questions on the self-assessment were unclear.	“This is a little confusing...there could be an easier way to get the answers.” (User 7)
Task 6: Complete self-assessment	Accuracy	Users identified that one of the self-assessments was not scoring correctly, providing some users with the wrong result.	“Yeah, that’s kind of worrying when I read that...I’m thinking, how can I be sedentary when I’m doing something 7 days a week.” (User 2)

^aRC: research coordinator.