Chapter 6 196 analysis. Multimedia Appendix 1 provides a schematic overview of the thematic ordering. Multimedia Appendix 1 lists all usability issues and user needs to be identified by 1, 2, or all user groups, grouped by the main theme, and presents the applied—or planned—solutions and adjustments to the Sense-IT app after the 3 cycles of usability testing. After this, the current version of the Sense-IT app is presented. 2.5 First Cycle: Testing With Patients With Borderline Personality Disorder 2.5.1 Participants A total of 5 patients of the DBT program participated in testing the app. Participation was on a voluntary basis and after informed consent. All were previously diagnosed with BPD and low emotional awareness. Of 5 patients, 4 completed the second iteration, and 1 patient could not participate on the second day of the second iteration, as she forgot that she had to attend other meetings. Patients were aged between 18 and 49 years (mean age 28 years, SD 11.82). All participants were females, and all had Dutch as their native language. 2.5.2 Procedure The first cycle consisted of 2 iterations, each with a design phase and an evaluation phase. During the hours of testing, members of the research team remained standby at the clinic in case a patient would encounter technical issues or would come up with questions regarding the app. During the first iteration, the focus was on the main functioning and overall UX of the app. Patients received a short explanation of the system and some information on the upcoming days. On the first day, patients just had to wear the smartwatch to gather the required HR data to set personal baseline values. They did not have to interact with the system but were asked to monitor their personal experiences on wearing the hardware. The second day, patients again wore the equipment running the Sense-IT app. They were asked to use and interact with the Sense-IT app as if it was an actual adjunctive to their therapy. Patients were asked to fill in a questionnaire at the end. After the first iteration, adjustments were made to the app. During the second iteration, the focus was on patients’ preferences on the (graphical) user interface ([G]UI) and the interaction with the system. It again consisted of 2 days of testing. Patients were instructed to interact with the app as if it was part of their therapy program. The main goal of the second iteration was to examine whether the alterations to the app led to a satisfactory overall UX. At the end of the day, patients were asked to fill in the SUS. They also were briefly interviewed on their experiences.
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